History Manga / ZekkyouGakkyuu

** ''Best Friend'' features Mio, who has difficulty making friends after entering middle school. [[spoiler:Not to mention the stone statue near her school, who can and will absorb lonely people into its stone visage because ''it'' seems to wants friends too.]]
** ''The Toilet Goddess'' has Suzu, following Mio's example. But rather than attempt to strike up friendship she blames her childhood friend for abandoning her and hides in the restroom every time break occurs.

* DeathOfAChild: Since most of the stories deal with sixth-graders or middleschoolers, they are not exempt from dying, and many frequently end up killed or worse.

** ''Best Friend'' features Mio, who has difficulty making friends after entering middleschool. [[spoiler:Not to mention the stone statue near her school, who can and will absorb lonely people into its stone visage because ''it'' seems to wants friends too.]]

** ''Graduate Number 108:'' Rina and her friends are going to graduate from elementary school soon, but see a strange shadow around Rina in all the pictures from the yearbook. The shadow gets closer and clearer with each viewing of the pictures. Rina figures it must be the spirit of Reiko, a girl that went missing during the previous summer. [[spoiler:It turns out that Rina is a bully and puts herself into the spotlight, something that Reiko is well-aware of and called her out on it. In a fit of rage, Rina killed Reiko and burned the body in the incinerator. When she's about to do the same to the yearbook and gloats about how she'll continue to bully herself friends in middleschool and highschool, Reiko pops up and drags Rina into the incinerator.]]

* KidsAreCruel[=/=]TeensAreMonsters: Most of the characters are elementary to middleschool age, so this plays a part.

* NothingExcitingEverHappensHere: It's possible to be this case, since Yomi provides the opening and closing narration for every story [[spoiler:and is the ghost of a girl that died in middleschool]], it's not too far-fetched that the stories are happening in the same area.

** ''The Sacrifice Club'' has Ayuko prepared to kill her crush's girlfriend.

* LackOfEmpathy: Most of the monsters. Some are justified in their actions, since they are looking to get revenge on those who wrong them [[note]]''Slit-Mouthed Woman'' and ''Graduate Number 108''[[/note]] and others simply have no human morals or don't understand how their actions are wrong. [[note]]''Best Friend''[[/note]]
* LighterAndSofter: Later chapters have eased up on the gore or body horror, as well as getting some happier endings to them. Likely changed due to the series being published in ''Ribon'', a magazine aimed at preteen girls and [[WhatDoYouMeanItsForKids parents found it a bit]] [[WhatDoYouMeanItsForKids too]] [[WhatDoYouMeanItsForKids dark]].

** ''Bloody Valentine:'' [[spoiler:Misaki is a delusional yandere and never actually dated Naoyuki. She was the manufacturer of the threatening letters, it's implied that she threw a ball through a window to make the glass injure Sasaoka. Said Sasaoka is Naoyuki's actual girlfriend and he merely pretended to break up with her to keep her safe from Misaki.]]

** The protagonist of ''Soprano Of Miracles'' is called Uta, which means song. An ironic name, since she can't sing.

** The ''Friend of the Science Room'' wants nothing more than to have a companion. Being a skeleton, it's a hard job to do without being noticed or seen as a freak. [[spoiler:Good thing it can make use of human parts to cover itself.]])

** ''Best Friend'' has Mio, difficulty making friends after entering middleschool. [[spoiler:Not to mention the stone statue near her school, who can and will absorb lonely people into its stone visage because ''it'' seems to wants friends too.]]

** The two-parter ''The Day I Became A Demon'' has Kana stand up for Erika and ends up getting bullied, with [[UngratefulBastard Erika]] joining the bullies herself. When Kana travels back in time, she chooses to side wit the bullies this time and picks on Erika. Including locking Erika into a burning room. [[spoiler:And Kana only goes back when she realizes that Erika's wish caused time to revert itself because she felt horrible over bullying Kana.]]

* KarmaHoudini: Quite a few girls get by without tasting punishment in tjese stories. When this trope does happen, it's usually centered around romance.

** ''Graduate Number 108:'' Rina and her friends are going to graduate from elementary school soon, but see a strange shadow around Rina in all the pictures from the yearbook. The shadow gets closer and clearer with each viewing of the pictures. Rina figures it must be the spirit of Reiko, a girl that went missing during the previous summer. [[spoiler:It turns out that Rina is a bully and puts herself into the spotlight, something that Reiko is well-aware of and called her out on it. In a fit of rage, Rina killed Reiko and burned the body in the incinerator. When she's about to do the same to the yearbook and gloats about how she'll continue to bully herself friends in middleschool and highschool, Reiko pops up and drags Rina into the incenrator.]]

* CozyCatastrophe: The epilogue to ''The Boyfriend Lesson'' reveals that [[spoiler:virtual humans have replaced majority of humanity and the [[ChildlessDystopia birthrate is at zero]]. Why bother going to the trouble of finding a partner and raising offspring, if one can simply create the ''perfect'' one with a few clicks? And the [=AIs=] are so pleasant to be around that]] even the Prime Minister's response is to 'let nature take its course'.

** In ''Boyfriend Story'', virtual boyfriend Akira Honjou slowly becomes this over time. While starting out as the perfect boyfriend, his programming malfunctions because too many personality traits were uploaded into him, to the point where he [[ViolentlyProtectiveBoyfriend uses lethal force]] on perceived obstacles to his and Jun's relationship, and he gains a huge obsession with her.

* BeautyEqualsGoodness: Averted. ''The Bondes Of A Curse'' makes it clear that, while [[spoiler:Sakahara-senpai]] is quite good-looking, the person's character is anything but pleasant. On the opposite end, [[spoiler:Kurosawa]] is described as gloomy, but turns out to be wonderful.

** The ''Friend of the Science Room'' wants nothing more than to have a companion. Being a skeleton, it's a hard job to do without being noticed or seen as a freak. [[spoiler:Good thing it can make use of human parts to cover itself.])

* GoneHorriblyRight: [[spoiler:''Boyfriend Story'' and all of the ''[x] Story'' series of games are revealed to be government sanctioned attempts to get the population up in Japan. It worked... for the virtual population. Birthrates plummeted to 0 overall in the nationwide pursuit for a perfect relationship.]]

* GrassIsGreener: Yuuki hates being her gender and only sees the bad in it, so she wishes to become a boy instead. Little did she realize that being a boy comes with its own problems, and that her situation didn't change at all just because she's free of feminine worries. [[spoiler:Her male counterpart rvidently goes through the same thing in her body.]]

Despite the series being published in a magazine for preteens and older, a large portion of the stories are surprisingly dark and terrifying. Cruel twists and terrible fates are the norm, though some stories became a bit more lighthearted over time.

A sequel series with new stories labelled ''Zekkyou Gakkyuu Tensei'' debuted in summer 2015.

* GreenAesop: ''The Fish Family'' warns people to prevent global warming. [[spoiler:It's implied that global warming has caused the planet to be flooded and everyone undergoing a special surgery to obtain fish-gills once they are old enough.]]

* IJustWantToHaveFriends