History Manga / KillBlue

* PapaWolf: One of the reasons why Ogami continues to act as TheBeard for Noren is because she's the same age as his daughter, Kozue. The idea of all these guys trying to exploit her inflames Ogami's fatherly instincts, leaving him just as disgusted as she is at her situation and instilling in him a desire to protect her.

* TheBeard: Because of all the people vying for her hand for the sake of her father's company, Noren impulsively declares that she's dating Ogami in an attempt to fend off her suitors. He's clearly alarmed at being volunteered like this, but decides to go along with the ruse for the sake of keeping all the other guys away from her due to her reminding him of his own similarly-aged daughter and out of appreciation for her ramen. Unfortunately, this doesn't dissuade said suitors much at all, as they now focus on trying to bully Ogami or take the pen symbolizing Ogami's apparent relationship with Noren through competitions.

* TechnologicallyBlindElders: Ogami is a middle-aged man and struggles to use his smartphone for more than basic calling. After being added to a group chat, he panics at the rapid-fire texts he recieves until Nekota informs him that he can just mute the notifications.

* TheBeard: Because of all the people vying for her hand for the sake of her father's company, Noren impulsively declares that she's dating Ogami in an attempt to fend off her suitors. He's clearly alarmed at being volunteered like this, but decides to go along with the ruse for the sake of keeping all the other guys away from her due to her reminding him of his own similar aged daughter and out of appreciation for her ramen. Unfortunately, this doesn't dissuade said suitors much at all, as they now focus on trying to bully Ogami or take the pen symbolizing Ogami's apparent relationship with Noren through competitions.

* BigEater: Noren is confused when Ogami is on the verge of blowing chunks from eating eight bowls of ramen. She complains that was "only the eighth one" and doesn't suffer from the same BalloonBelly he has. Not only that, she's clearly looking forward to eating more. When the Home Ec club has a ramen-making contest, Noren's creation is loaded with a pile of topping three or four times taller than the actual bowl. It gets zero points because no one wants to risk their life eating something so laden with salt, sugar, and fat that it makes a meat lover's pizza look like health food.

* LivingMacguffin: Noren Mitsuoka is the only heir to her family's pharmaceutical company, and her father declared that whoever marries her will inherit the company from him. This has led to many unsavory figures trying to win her hand in marriage for the sake of taking the business and the resulting miracle drugs it's developing, such as the wasp that reverted Ogami to a child.

* PornStash: Invoked. Ogami ralizes that Noren might be developing feelings for him and has Nekota send him a porno in hopes that he can make Noren disgusted enough to quash those feelings that are never going to be requited.

* SplitPersonality: Mai Otohime has two personalities: one where she's a meek, fair-skinned schoolgirl and one where she's a rowdy elite marine athlete who's also lovestruck for Ogami.

* BrokenAce: Ogami is a peerless hitman with inhuman aim and the ability to wipe out entire gangs on his lonesome. He's also completely friendless, divorced (albeit AmicableExes with his ex-wife), and living alone in an apartment while eating nothing but ramen. He takes no pleasure in his infamy and calls his life pathetic while wondering what he could have done better. In addition, his lifestyle deprived him of an education beyond elementary school, leaving him unable to be anything other than a hitman. This is actually why Ogami grows to like being a middle student because it gives him the chance to learn and experience things he was never able to during his actual childhood.

* CursedWithAwesome: As Ogami gets used to his predicament, he finds being a middle schooler more enjoyable and fulfilling than his old life as a hitman ever was, wishing that these days could go on forever.

* InSeriesNickname: Ogami grows to respect Chisato immensely, calling her "capo", as in "caporegime" (a Mafia title roughly equivalent to captain) on instinct, for being the head of the Home Economics Club.

* MySisterIsOffLimits: The normally nice and easygoing Ryo is enraged when Tenma starts making moves on Chisato. Even Ogami, a hardened assassin, is terrified by how quickly Ryo's attitude changes.

* SacrificedBasicSkillForAwesomeTraining: Ogami is an inhumanly good marksman, a skilled hand-to-hand combatant, and an all-around unstoppable hitman. But his training deprived him of a normal childhood and stunted his social skills. He has no hobbies outside of work and struggles to fit in when forced to attend school.

* TrademarkFavoriteFood: Ogami has a taste for ramen, as it's cheap, filling, and delicious, making it both practical and enjoyable for him. Him walking into Noren's uncle's ramen shop is what [[CommonalityConnection leads the two of them to start bonding]], as she loves ramen even more than he does.

* TheBeard: Because of all the people vying for her hand for the sake of her father's company, Noren impulsively declares that she's dating Ogami in an attempt to fend off her suitors. He's clearly alarmed at being volunteered like this, but decides to go along with the ruse for the sake of keeping all the other guys away from her and out of appreciation for her ramen. Unfortunately, this doesn't dissuade said suitors much at all, as they now focus on trying to bully Ogami or take the pen symbolizing Ogami's apparent relationship with Noren through competitions.

* BrokenAce: Ogami is a peerless hitman with inhuman aim and the ability to wipe out entire gangs on his lonesome. He's also completely friendless, divorced (albeit AmicableExes with his ex-wife), and living alone in an apartment while eating nothing but ramen. He takes no pleasure in his infamy and calls his life pathetic while wondering what he could have done better. In addition, his lifestyle deprived him of an education beyond elementary school, leaving him unable to be anything other than a hitman.

* ShoutOut: After suffering from a BalloonBelly from eating eight bowls of ramen with Noren, Ogami complains that he feels like [[Franchise/DragonBall he's about to explode Cell]]. Meanwhile, the shadow of the self-destructing Cell can be seen behind Ogami.

* TheBeard: Because of all the people vying for her hand for the sake of her father's company, Noren impulsively declares that she's dating Ogami in an attempt to fend off her suitors. He's clearly alarmed at being volunteered like this, but decides to go along with the ruse for the sake of keeping all the other guys away from her and out of appreciation for her ramen. Unfortunately, this doesn't dissuade said suitors much at all, as they now focus on trying to bully Ogami or take the pen symbolizing Ogami's apparent relationship through competitions.

* PopCultureOsmosisFailure: After scarfing down eight bowls of ramen while trying to help Noren with a ramen-making contest, Ogami suffers a BalloonBelly and compares himself to [[Franchise/DragonBall Cell when he's about to explode]]. Given that the scene was aired on TV in 1993, Noren misses the reference completely as she wouldn't have been born at the time of airing.

* AllLoveIsUnrequited: Mai Otohime falls in love with Ogami after the latter saves her from getting hit by a truck. She then devotes all of her energy into trying to seduce him and make him hers. Unfortunately for her, he's completely uninterested as he's a previously married 40-year-old with an ex-wife and daughter trapped in a middle schooler's body.

* DoesNotLikeMen: Noren developed a hatred of most men because of how they make passes at her solely to inherit her family's pharmaceuticals company. The way they leer at her while clearly fantasizing about how to exploit her disgusts her. Ogami is one of the first people her (apparent) age she can feel comfortable around because he clearly doesn't see her that way (and has no attraction to her at all as a man pushing forty with an ex-wife and child).

* MyGrandsonMyself: When another assassin recognizes Ogami's impeccable marksmanship and threatens to out him, Ogami quickly spins a story of being his own love child as the reason why he's so accurate. His opponent buys it and starts to share his own DarkAndTroubledPast before deciding it isn't worth it.

* TheGift: Tenma is naturally tall, hard-working, an innately talented at any sports he puts his mind into. He's considered a "unicorn" for his extreme athletic talent and can compete with assassins who have trained themselves to the point of having a CharlesAtlasSuperpower.

''Kill Blue'' is an action-comedy manga written by Tadatoshi Fujimaki of ''Manga/KurokosBasketball'' fame and running in the famous ''Magazine/ShonenJump'' magazine. It follows the legendary hitman Juzo Ogami after he's been physically reverted into the body of a middle schooler. Forced into an environment strange and alien to him, Ogami finds that he likes being a middle schooler more than he thought he would.

* BigEater: When Ogami is on the verge of throwing up from eating ramen at eight different restaurants in one day, Noren is confused, saying that was "only the eighth one". Not only does she not suffer from the same BalloonBelly he is, she's clearly looking forward to eating more.

* ShoutOut: After suffering from a BalloonBelly from eating eight bowls of ramen with Noren, Ogami complains that he feels like [[Franchise/DragonBall Cell about to explode]].

* MissionControl: Ogami's partner/protege, Nekota, supports Ogami from behind a computer. He's able to advise Ogami and send him information via the cameras and comm systems hidden in Ogami's glasses. He also sends Ogami his gun in a pinc via a drone h.

* WorfHadTheFlu: Invoked. Ogami gets so worked up that he actually manages to keep up with Tenma, a known super athlete, in a soccer match. This gets Ogami mobbed by the sports clubs after the game, threatening to put an end to Ogami's dream of a quiet middle school life. AFter hearing about this, Tenma offers to tell the press that he wasn't at his best due to an injury, thus making Ogami's performance less impressive by comparison.

* AmicableExes: It's implied that Juzo has been divorced from his ex-wife Eri for some time, as she's once again using her maiden name Wanibuchi. But she doesn't seem to bear any ill will toward him and they're still in regular contact with each other. He even sends the rice balls he made with the Home Ec club to her and their daughter, Kozue. Given how much he thinks about Eri, he clearly still loves her despite their separation.
* TheBeard: Because of all the people vying for her hand for the sake of her father's company, Noren impulsively declares that she's dating Juzo in an attempt to fend off her suitors. He's clearly alarmed at being volunteered like this, but decides to go along with the ruse for the sake of keeping all the other guys away from her and out of appreciation for her ramen. Unfortunately, this doesn't dissuade said suitors much at all, as they now focus on trying to bully Juzo or take the pen symbolizing Juzo's apparent relationship through competitions.
* BecauseImGoodAtIt: The only reason why Juzo is still a hitman is because he doesn't know how to do anything else. He was trained to be one since he was an elementary schooler and never even attended middle school.
* BookDumb: Justified. Juzo never got to attend school past elementary school because he's been working as a hitman ever since he was child. So he struggles to keep in school on his own once more advanced subjects are brought up and he's too prideful to ask his teachers for aid. It's not until he gets help from his classmate, Ryo Shiraishi, that his grades improve.
* BrokenAce: Juzo is a peerless hitman with inhuman aim and the ability to wipe out entire gangs on his lonesome. He's also completely friendless, divorced (albeit AmicableExes with his ex-wife), and living alone in an apartment while eating nothing but ramen. He takes no pleasure in his infamy and calls his life pathetic while wondering what he could have done better. In addition, his lifestyle deprived him of an education beyond elementary school, leaving him unable to be anything other than a hitman.
* CharlesAtlasSuperpower: Juzo is capable of blatantly superhuman feats through nothing but his own training and experience. He hops up a signal tower in an instant to use as a vantage point and throw chalk hard enough to instantly burst into a cloud of dust upon hitting a wall. But he notes that his strength has diminished due to having the body of a child, hence why he's unable to knock out the panda pervert in the first chapter with one punch to the gut.
* DeliberateValuesDissonance: As a nearly 40-year-old man who is largely a social recluse, Juzo's values are outdated and old-fashioned by modern standards. He initially brushes off [[MenCantKeepHouse the idea of men keeping house]] as a woman's job and uses some possessive language while trying to defend Noren. But he's called out for this and made to change his ways as part of his attempts to fit in.
* DoesNotLikeMen: Noren developed a hatred of most men because of how they make passes at her solely to inherit her family's pharmaceuticals company. The way they leer at her while clearly fantasizing about how to exploit her disgusts her. Juzo is one of the first people her (apparent) age she can feel comfortable around because he clearly doesn't see her that way (and has no attraction to her at all as a man pushing forty with an ex-wife and child).
* FountainOfYouth: The plot begins when Juzo is stung by a wasp created by a genetic engineering company that reverts him to a twelve or thriteen-year-old physically.
* GogglesDoSomethingUnusual: As part of his middle schooler disguise, Juzo wears a pair of glasses with hidden cameras and a two-way comms function so Nekota can see what he sees to act as his MissionControl.
* HeroicSelfDeprecation: Juzo tells a gangster that anyone who doesn't know how to treat a lady is trash. Given Juzo's divorce and calling himself pathetic for not being a better husband, this is also a clear jab at himself.
* HitmanWithAHeart: Juzo may be a hitman, but he refuses to take jobs that involve killing women, children, or innocent civilians. Off the job, he's typically nice despite his gruff attitude.
* ImprobableAimingSkills: One of Juzo's defining skills is his incredible precision with a gun. He's able to shoot a tracker onto a speeding car from atop a transmission tower with ease. Later on, he defends innocent bystanders caught in his shoot out with another assassin by shooting his opponent's bullets out of the air. He then tops this by shooting nearly straight up into the air so the bullets will arc down and hit his intended targets anyways due to the pull of gravity. The absurdity of his feats is lampshaded repeatedly and called inhuman, with even Juzo admitting that he can only get his "shooting up into the air" trick to work about 70% of the time.
* LivingMacguffin: Noren Mitsuoka is the only heir to her family's pharmaceutical company, and her father declared that whoever marries her will inherit the company from him. This has led to many unsavory figures trying to win her hand in marriage for the sake of taking the business and the resulting miracle drugs it's developing, such as the wasp that reverted Juzo to a child.
* LockedIntoStrangeness: Although Juzo is physically twelve or thirteen years old, half of his hair is still as gray as it was when he was still middle-aged. This is the only physical clue that he's not just a middle schooler, as he has no real distinguishing features otherwise.

* MenCantKeepHouse: Juzo's place is a mess because he hasn't called his housekeeper over for a while and he doesn't plan on changing now. According to him, cleaning is a job for women. Nekota calls him out on how [[DeliberateValuesDissonance outdated his values are]]. Juzo starts coming around to the idea of cooking and cleaning for himself with the Home Ec club and hearing how much his daughter and ex-wife enjoyed the rice balls he made for them.

* MundaneLuxury: Having never gotten an education past elementary school, Juzo is blown away by the breadth of topics he's learning in middle school. By the end of his first day, he's sobbing TearsOfJoy because of how much fun he's having as a student compared to his dead-end job as an assassin.
* MyGrandsonMyself: When another assassin recognizes Juzo's impeccable marksmanship and threatens to out him, Juzo quickly spins a story of being his own love child as the reason why he's so accurate. His opponent buys it and starts to share his own DarkAndTroubledPast before deciding it isn't worth it.
* MySisterIsOffLimits: The normally nice and easygoing Ryo is enraged when Tenma starts making moves on Chisato. Even Juzo, a hardened assassin, is terrified by how quickly Ryo's attitude changes.
* NeverHurtAnInnocent: Despite his reputation as a hitman who will kill anyone for the right price, Juzo makes a point of restricting his targets to "iredeemables" like murderous gangsters. Even after being turned into a kid, he doesn't do anything permanently harmful to the troublemakers he runs into.
* PapaWolf: One of the reasons why Juzo continues to act as TheBeard for Noren is because she's the same age as his daughter, Kozue. The idea of all these guys trying to exploit her inflames Juzo's fatherly instincts, leaving him just as disgusted as she is at her situation and instilling in him a desire to protect her.
* PerpetualPoverty: Despite his skills as an assassin, Juzo is perpetually broke between paying child support, his mortgage, and his car loan. He also runs up other bills too, like constantly eating out because he can't be bothered to cook and hiring a housekeeper instead of doing his own chores.
* SacrificedBasicSkillForAwesomeTraining: Juzo is an inhumanly good marksman, a skilled hand-to-hand combatant, and an all-around unstoppable hitman. But his training deprived him of a normal childhood and stunted his social skills. He has no hobbies outside of work and struggles to fit in when forced to attend school.
* TechnologicallyBlindElders: Juzo is a middle-aged man and struggles to use his smartphone for more than basic calling. After being added to a group chat, he panics at the rapid-fire texts he recieves until Nekota informs him that he can just mute the notifications.
* ThouShaltNotKill: Downplayed. Juzo is an assassin, so killing is his specialty. But he doesn't really like to do it when he isn't getting paid for it. So he shoots the gangsters who kidnapped Mitsuoka with rubber bullets.
* WhenIWasYourAge: Juzo still reflexively talks like an old man when he's agitated. For instance, when he's playing soccer against Tenma, Juzo thanks him for getting him fired up and desperate to win in a way he hasn't felt since "back in the day". Tenma is baffled that Juzo is talking like a spent old man when Juzo is supposed to have just entered middle school.

** Because he needs to maintain his cover as an ordinary middle-school student, Juzo is forced to run away from bullies he can easily beat up because he can't risk expulsion and losing his paycheck for the job.
** Tenma tends to hold back when playing at first because he loves sports so much that he doesn't want the other team to throw in the towel immediately. He takes off the proverbial kiddie gloves when it's clear that Juzo can compete with him.
* WorkingWithTheEx: Juzo's ex-wife Eri happens to also be the chief scientist of the Z.O.O, the assassin syndicate he works for.

* PapaWolf: One of the reasons why Juzo contineus to act as TheBeard for Noren is because she's the same age as his daughter, Kozue. The idea of all these guys trying to exploit her inflames Juzo's fatherly instincts, leaving him just as disgusted as she is at her situation and instilling in him a desire to protect her.

* AmicableExes: It's implied that Juzo has been divorced from his ex-wife Eri for some time, as she's once again using her maiden name Wanibuchi. Despite their divorce, she doesn't seem to bear any ill will toward him and they're still in regular contact with each other. He even sends the rice balls he made with the Home Ec club to her and their daughter, Kozue. Given how much he thinks about Eri, he clearly still loves her despite their separation.

* ImprobableAimingSkills: One of Juzo's defining skills is his incredible precision with a gun. He's able to shoot a tracker onto a speeding car from atop a transmission tower with ease. Later on, he defends innocent bystanders caught in his shoot out with another assassin by shooting his opponent's bullets out of the air. He then tops this by shooting nearly straight up into the air so the bullets will arc down and hit his intended targets anyways due to the pull of gravity. The absurdity of his feats is lampshaded repeatedly called inhuman, with even Juzo admitting that he can only get his "shooting up into the air" trick to work about 70% of the time.

* LockedIntoStrangeness: Although Juzo is physically twelve or thirteen years old, half of his hair is still as gray as it was when he was still middle-aged. This is the only physical clue that he's not just a 12-13 year old, as he has no real distinguishing features otherwise.

* ImprobableAimingSkills: One of Juzo's defining skills is his incredible precision with a gun. He's able to shoot a tracker onto a speeding car from atop a transmission tower with ease.

* AmicableExes: It's implied that Ogami has been divorced from his ex-wife Eri for some time, as she's once again using her maiden name Wanibuchi. Despite their divorce, she doesn't seem to bear any ill will toward him and they're still in regular contact with each other. He even sends the rice balls he made with the Home Ec club to her and their daughter.
* BecauseImGoodAtIt: The only reason why Ogami is still a hitman is because he doesn't know how to do anything else. He was trained to be one since he was an elementary schooler and never even attended middle school.
* BookDumb: Justified. Ogami never got to attend school past elementary school because he's been working as a hitman ever since he was child. So he struggles to keep in school on his own once more advanced subjects are brought up and he's too prideful to ask his teachers for aid. It's not until he gets help from his classmate, Ryo Shiraishi, that his grades improve.
* BrokenAce: Ogami is a peerless hitman with inhuman aim and the ability to wipe out entire gangs on his lonesome. He's also completely friendless, divorced (albeit AmicableExes with his ex-wife), and living alone in an apartment while eating nothing but ramen. He takes no pleasure in his infamy and calls his life pathetic while wondering what he could have done better. In addition, his lifestyle deprived him of an education beyond elementary school, leaving him unable to be anything other than a hitman.
* CharlesAtlasSuperpower: Ogami is capable of blatantly superhuman feats through nothing but his own training and experience. He hops up a signal tower in an instant to use as a vantage point and throw chalk hard enough to instantly burst into a cloud of dust upon hitting a wall. But he notes that his strength has diminished due to having the body of a child, hence why he's unable to knock out the panda pervert in the first chapter with one punch to the gut.
* DeliberateValuesDissonance: As a nearly 40-year-old man who is largely a social recluse, Ogami's values are outdated and old-fashioned by modern standards. He initially brushes off [[MenCantKeepHouse the idea of men keeping house]] as a woman's job and uses some possessive language while trying to defend Noren. But he's called out for this and made to change his ways as part of his attempts to fit in.
* DoesNotLikeMen: Noren developed a hatred of most men because of how they make passes at her solely to inherit her family's pharmaceuticals company. The way they leer at her while clearly fantasizing about how to exploit her disgusts her. Ogami is one of the first people her (apparent) age she can feel comfortable around because he clearly doesn't see her that way (and has no attraction to her at all as a man pushing forty with an ex-wife and child).
* FountainOfYouth: The plot begins when Ogami is stung by a wasp created by a genetic engineering company that reverts him to a twelve or thriteen-year-old physically.
* GogglesDoSomethingUnusual: As part of his middle schooler disguise, Ogami wears a pair of glasses with hidden cameras and a two-way comms function so Nekota can see what he sees to act as his MissionControl.
* HeroicSelfDeprecation: Ogami tells a gangster that anyone who doesn't know how to treat a lady is trash. Given Ogami's divorce and calling himself pathetic for not being a better husband, this is also a clear jab at himself.
* ImprobableAimingSkills: One of Ogami's defining skills is his incredible precision with a gun. He's able to shoot a tracker onto a speeding car from atop a transmission tower with ease.
* LivingMacguffin: Noren Mitsuoka is the only heir to her family's pharmaceutical company, and her father declared that whoever marries her will inherit the company from him. This has led to many unsavory figures trying to win her hand in marriage for the sake of taking the business and the resulting miracle drugs it's developing, such as the wasp that reverted Ogami to a child.
* LockedIntoStrangeness: Although Ogami is physically twelve or thirteen years old, half of his hair is still as gray as it was when he was still middle-aged. This is the only physical clue that he's not just a 12-13 year old, as he has no real distinguishing features otherwise.
* MenCantKeepHouse: Ogami's place is a mess because he hasn't called his housekeeper over for a while and he doesn't plan on changing now. According to him, cleaning is a job for women. Nekota calls him out on how [[DeliberateValuesDissonance outdated his values are]]. Ogami starts coming around to the idea of cooking and cleaning himself with the Home Ec club and hearing how much his daughter and ex-wife enjoyed the rice balls he made for them.

* MundaneLuxury: Having never gotten an education past elementary school, Ogami is blown away by the breadth of topics he's learning in middle school. By the end of his first day, he's sobbing TearsOfJoy because of how much fun he's having as a student compared to his dead-end job as an assassin.
* NeverHurtAnInnocent: Despite his reputation as a hitman who will kill anyone for the right price, Ogami makes a point of restricting his targets to "iredeemables" like murderous gangsters. Even after being turned into a kid, he doesn't do anything permanently harmful to the troublemakers he runs into.
* PerpetualPoverty: Despite his skills as an assassin, Ogami is perpetually broke between paying child support, his mortgage, and his car loan. He also runs up other bills too, like constantly eating out because he can't be bothered to cook and hiring a housekeeper instead of doing his own chores.
* SacrificedBasicSkillForAwesomeTraining: Ogami is an inhumanly good marksman, a skilled hand-to-hand combatant, and an all-around unstoppable hitman. But his training deprived him of a normal childhood and stunted his social skills. He has no hobbies outside of work and struggles to fit in when forced to attend school.
* TechnologicallyBlindElders: Ogami is a middle-aged man and struggles to use his smartphone for more than basic calling. After being added to a group chat, he panics at the rapid-fire texts he recieves until Nekota informs him that he can just mute the notifications.
* ThouShaltNotKill: Downplayed. Ogami is an assassin, so killing is his specialty. But he doesn't really like to do it when he isn't getting paid for it. So he shoots the gangsters who kidnapped Mitsuoka with rubber bullets.
* WorkingWithTheEx: Ogami's ex-wife Eri happens to also be the chief scientist of the Z.O.O, the assassin syndicate he works for.

* HeroicSelfDeprecation: Ogami tells a gangster that anyone who doesn't know how to treat a lady is trash. Given Ogami's divorce his ex-wife and calling himself pathetic for not being a better husband, this is also a clear jab at himself.

* MenCantKeepHouse: Ogami's place is a mess because he hasn't called his housekeeper over for a while and he doesn't plan on changing now. According to him, cleaning is a job for women. Nekota calls him out on how outdated his values are. Ogami starts coming around to the idea of cooking and cleaning himself with the Home Ec club and hearing how much his daughter and wife enjoyed the rice balls he made for them.

* WorkingWithTheEx: Ogami's ex-wife happens to also be the chief scientist of the syndicate he works for.

* BrokenAce: Ogami is a peerless hitman with inhuman aim and the ability to wipe out entire gangs on his lonesome. He's also completely friendless, estranged from his ex-wife and daughter, and living off nothing but ramen. He takes no pleasure in his infamy and calls his life pathetic while wondering what he could have done better. In addition, his lifestyle deprived him of an education beyond elementary school, leaving him unable to be anything other than a hitman.

* HeroicSelfDeprecation: Ogami tells a gangster that anyone who doesn't know how to treat a lady is trash. Given Ogami's estrangement from his ex-wife and treatment of Noren, this is also a clear jab at himself.

* MenCantKeepHouse: Ogami's place is a mess because he hasn't called his housekeeper over for a while and he doesn't plan on changing now. According to him, cleaning is a job for women. Nekota calls him out on how outdated his values are.

But the fact that he's starting to enjoy his second childhood might be the most surprising thing of all.

Although perplexed by his current condition, he still has bills to pay and offers to keep working to make ends meet. His next assignment? Infiltrate a middle school and perform an inspection before his boss' daughter enrolls there. Too strapped for cash to refuse, Ogami's newest job may be his toughest yet. The invincible assassin soon finds himself struggling with [[BookDumb school work]], [[SociallyAwkwardHero his own lack of social skills]], and [[TechnologicallyBlindElders his discomfort with modern technology.]]

And despite it all, he might wind up enjoying his second childhood.

''Kill Blue'' is an action-comedy manga written by Tadatoshi Fujimaki of ''Manga/KurokosBasketball'' fame and running in the famous ''Magazine/ShonenJump'' magazine. It follows the legendary hitman Juzo Ogami after he's been physically reverted into the body of a middle schooler. Forced into an environment strange and alien to him, Ogami finds that he might like being a middle schooler more than he thought.

* BookDumb: Ogami never got to attend school past elementary school because he's been working as a hitman ever since he was child. So he struggles to keep in school on his own once more advanced subjects are brought up until he gets help from his classmate, Ryo Shiraishi.

* SacrificedBasicSkillForAwesomeTraining: Ogami is sharp, an inhumanly good marksman, a skilled hand-to-hand combatant, and an all-around unstoppable hitman. But his training deprived him of a normal childhood and stunted his social skills. He has no hobbies outside of work and struggles to fit in when forced to attend school.

Although perplexed by his current condition, he still has bills to pay and offers to keep working to make ends meet. His next assignment? Infiltrate a middle school and perform an inspection before his client's daughter enrolls there. Too strapped for cash to refuse, Ogami's newest job may be his greatest challenge yet

And maybe, just maybe, he might wind up enjoying his second childhood.

''Kill Blue'' is an action-comedy manga written by Tadatoshi Fujimaki of ''Manga/KurokosBasketball'' fame. It follows the legendary hitman Juzo Ogami after he's been physically reverted into the body of a middle schooler. Forced into an environment strange and alien to him, Ogami finds that he might like being a middle schooler more than he thought.