Literally Perverted Mask, Ultimate!! Hentai Kamen is a 6 volume manga by Keishuu Ando. Mild-mannered Kenpo specialist Kyosuke accidentally puts a pair of panties rather than a robbers mask on when he tries to sneak in and spoil a robbery. His mother's 'perverted blood' awakes within him, he strips, and the baddies are toast. Hijinks ensue.
It got adapted into a live-action movie in 2013. A sequel movie, Hentai Kamen: The Abnormal Crisis, was released in 2016.
Hentai Kamen provides examples of:
- Accidental Pervert: Often. It doesn't help that I Just Want to Be Normal Kyosuke has inherited his mom's S&M-lovin' genes... Come to think of it, it was an Accidental Pervert incident that created Hentai Kamen to begin with.
- Adaptational Wimp: In the movie, Kyosuke initially pretty much sucks at martial arts, where in the manga he was one of the club's strongest members even as a rookie first-year.
- Adaptational Badass:
- Hentai Kamen, however, gets to benefit from this trope as he's shown dodging and even catching bullets at close-range. He also used his super-powered crotch as a Hypno Pendulum to brainwash the suicidal thoughts out of a guy wanting to jump off a building because his girlfriend dumped him.
- In the movie, his mom can use ropes as some kinda (badly-animated) tentacles, something not even Hentai Kamen can in the manga. In the manga, his mom doesn't have any special powers (just the genetic potential that, together with that of her husband, produced HK's powers).
- Affectionate Parody: The movie seems to take some pages out of Spider-Man's playbook, what with HK's whips being used in a similar manner to Spidey's webbing. There's also a montage of HK manga images at the start of the movie, similar to the opening MARVEL logo in Marvel Cinematic Universe films. For that matter, HK in the manga is something of a parody of classic tokusatsu heroes, frequently breaking out in a "Super Sentai" Stance or similar Ass-Kicking Pose.
- All Just a Dream: The ending of the live-action movie.
- Amazingly Embarrassing Parents:
- Kyosuke's mom. Her popularity as an S&M mistress has led to many humiliating moments for Kyosuke, whether it be through discovering her S&M gear, her revealing clothing or even the scars she's made on all the male acquaintances that know her... and that's not even mentioning the stories she tells to him and Shunka of when she met Kyosuke's dad.
- Despite being her butler, Sewa (AKA Jii) definitely qualifies in terms of how overprotective he is of her, as well as his blatant Dirty Old Man tendencies.
- All Men Are Perverts: Sometimes. Especially when Shunka is involved.
- Amazon Chaser: Kyosuke ended up married to Shunka the Chinese martial artist and even had a son with her.
- An Asskicking Christmas: the Christmas chapter in volume 2, of course.
- Butt-Monkey:
- Kyosuke. Despite being one of the club's best kenpou practitioners, he's usually shown being beaten up. Thankfully as Hentai Kamen he tends to give out as much punishment as he takes in his secret identity.
- Shuuto. Whenever he's not being molested by the club captain he's usually being wrapped into something by Shunka, both figuratively and literally.
- The Shuuekai are the antagonists with the most appearances. Of course in a series like this, it just means that they're humiliated the most.
- Crucified Hero Shot: Parodied during the Christmas episode, when Hentai Kamen swaps himself with the crucified Christ figure in a church, before laying his trademark perverted smackdown on a loan shark and his goons. While incidentally wearing a Santa hat.
- Badass Normal: Kyosuke becomes increasingly the most normal person (as his normal persona) with strength, although this starts to drain near the end.
- Calling Your Attacks: Subverted, averted, inverted, lampshaded, and turned upside down. "Inferno Bullet Train", anyone?
- Classy Cat-Burglar: Local thief Poodlan is this, despite the dog motif.
- Cool Mask: Subverted.
- Covert Pervert / Chivalrous Pervert: Kyousuke, Tengu Maru. Kamen is definitely the latter, using less gross techniques on women - although he's rarely in a position to fight them to begin with. He also can't figure out why people pass out when he walks so close...
- Distracted by the Sexy: Shunka has a fighting style that intentionally invokes this in her enemies, and she uses it against Kyousuke in her first appearance: "Mysterious Shiki Style: Honorable Lusting Fists". Besides also being an Action Girl, it probably goes without saying that she's Ms. Fanservice.
- Poodlan also invokes this... but to distract guard dogs instead of humans. Surprisingly, it works.
- Evil Counterpart: The Fake Hentai Kamen shares most of HK's abilities, but actually relies on the frustration of not being able to fulfill his perversion, unlike HK who just lets his pervert side go wild.
- To clarify, Fake/Bizarro Hentai Kamen is an even bigger pervert than HK, who gets off on being humiliated by those around him. Even HK finds this to be utterly disgusting.
- Finishing Move: see Calling Your Attacks. Unlike most examples, though, HK doesn't normally seem to repeat his Finishers, instead using a different technique for each battle.
- Funny Foreigner: Shunka's family, even for this series' standards. "Honorable Lusting Fists" aside, they think that Kyosuke wears ninja mesh guards and definitely not fishnet stockings under his clothing.
- Generation Xerox: A lot of Shunka's character traits can be traced back to her mother. Same personality, both practice the Honorable Lusting Fists style... and both really wanted Hentai Kamen to be Shunka's husband.
- Groin Attack: Goes both ways. Characters get hit in the groin, and Hentai Kamen himself tends to attack with his groin.
- Heroic Resolve: In the movie. "There's no law that says you're only as strong as you are perverted!"
- Hoist by His Own Petard: Hentai Kamen defeats Shunka by turning her Honorable Lusting Fists style right back at her.Hentai Kamen: <strikes a pose> "Please feel anywhere you'd like!"
- Humongous Mecha: The villain busts one out at the end of the live-action movie.
- Hypocritical Humor: When Hentai Kamen appears at the kenpou tournament, Kyosuke's mom and her friends are surprised at how he can go around showing his bare ass in public without being embarrassed... despite all of them wearing what can only be called a "buttcrack dress".
- Jii accuses Kyosuke of delinquent activity when he taking Aiko to the movies. As Satomi points out, they're in line for a movie titled "Loving You With All That I Am", while he's in line for a movie titled "Girl's School G-String Parade".
- In the Name of the Moon: occasionally, like during the Christmas episode:Hentai Kamen: "The one who breaks the dreams of innocent children, Akutoku Fudosan! Hentai Kamen has descended from heaven to deal with the likes of you!"
- Jaw Drop: Many, many, many people, usually as their reaction to Hentai Kamen appearing before them.
- Man in a Bikini: The titular mankini wearing/wielding hero of justice.
- Mask Power: What else would you call it when a guy gets superpowers from wearing panties like a Lucha mask?
- My Significance Sense Is Tingling: Whenever Kyosuke's detective instinct flares up (inherited from his father), it usually comes to him in the form of something "not smelling right". It comes to him in sound form during the second biker gang incident, though.
- No Celebrities Were Harmed: Kenpou Club advisor Buruusu Rii resembles a certain insanely famous martial artist, but he insists to Shunka's mom that it's just a coincidence.
- No-Respect Guy: Kyosuke gets this from time to time but Satomi is the undisputed queen of this trope, often crossing over into Butt-Monkey territory. She's often ignored by the club in favor for Aiko, despite doing things like fixing their uniforms (better than Aiko) and allowing them to use the hot spring her aunt owns for a trip. Granted, they do apologize but that's usually after Satomi lampshades this trope or outright threatens to rescind her offers of such privileges.
- Oh, Crap!: The usual expression of people who're about to go in to Kamen's underwear, face-first.
- Only Sane Man: Kyosuke and Aiko; mostly the former.
- Panty Thief: Sometimes Kyousuke has to steal panties to unlock his powers and fight whatever punks he encounters.
- Paper-Thin Disguise: The Fake Hentai Kamen is obviously a middle-aged, scrawny man with a red/pink mankini, while HK is incredibly buff with a white mankini. People still get fooled.
- Punch! Punch! Punch! Uh Oh...: The tournament, with the 100 Erupting Horsefly fists...getting tangled in Hentai Kamen's underwear straps.
- Running Gag: Several.
- People's heads caught in Kamen's underwear, leading to facefaults/fainting from spectators.
- Women with their faces obscured commenting on one another's beauty, only for it to be revealed that they are quite positively Gonk.
- Shunka trying to pass off something good of Shuuto's for something bad of hers, and then wrapping her brother's head in a large version of whatever it is when he corrects her.
- Aiko's crazy strength when it comes to Kyosuke.
- The Captain attacking, getting Ishida to root for him - only to realized that he's hitting on the opponent.
- Ship Tease: Kyosuke/Aiko, Kyosuke/Shunka. He marries the latter in the end.
- Shunka doesn't appear in the film, but there are elements of Kyosuke/Aiko and Aiko/Kyosuke.
- Shout-Out: The villain's mecha looks like Evangelion Unit-01 dressed up as a piece of heavy construction equipment.
- Spectacular Spinning: One of HK's finishing moves is him literally spinning with his groin on his opponent's face while on fire. It goes to its logical extreme during the fight against the Fake Hentai Kamen, where they end up spinning groin-to-groin against each other in mid-air.
- Spell My Name With An S: Kyosuke's name has a drawn-out 'o' sound, so it's just as good to spell it Kyousuke, Kyohsuke, Kyoosuke, etc.
- Split Personality: At one point in the film, Kyosuke has an argument with his HK persona inside his own mind.
- Spoof Aesop: In the live-action movie: "You don't need to be a pervert to be strong!".
- Time Skip: In Volume 6 by about 8 years, in which Kyousuke joined the police force like his father did, married Shunka and had a son named Kyoutarou.
- Too Kinky to Torture: Just when a villain thinks HK is done for while his minions pummel him to the ground, he gets up and reveals being beat up arouses him, and as such gives him more power.
- Villains Want Mercy: Very often, villains will offer to turn themselves in so that Hentai Kamen can relent. Doesn't save them from having a faceful of crotch.
- Wrestler in All of Us: Some of HK's moves have a vibe of this. Only they include more dick than usual.
