Be warned, she's as tough as she looks.
A completed martial arts/comedy manga also known as Dragons Raiden by Watanabe Tsuyoshi, which ran from 2012 to 2017 in Monthly Dragon Age.
As a 6 Year Old, Rintaro is diagnosed with Henisei Tashu Ijou Syndrome (translated as Odd Behavior Towards Opposite Sex-Syndrome) also known as Hentai Syndrome, a disease that could kill him if he gets too sexually aroused. To save him and provide a way for him to live as normal a life as possible, his father teaches him in the mountains for ten years the martial art of Koei Sougetsu as a way to control his body and mind when confronted by females. When he's 16 he chooses to enroll Nangokuren High School, which he assumed to be the biggest all-boys school in the country but is actually the biggest all-girls school that has just recently gone coed but is still now 99% female.
Rintaro now sees transferring out as his mission, but on his first day, he stumbles upon a large-scale battle and learns that the first rule of the school is that it "Abides the Law of Nature" which has turned the campus into a war zone-like environment between the strongest fighters. Forced by circumstances to demonstrate his skills, he's caught the eye of the 3 "Dragons", the bodacious female leaders of the three biggest factions that struggle against one another for control of the school. In particular, Ayane, the first-year leader is determined to make him her 'master' after seeing him perform martial arts.
This series provides examples of:
- Allergic to Love: Rintaro could quite easily die if he gets aroused. He had heart failure the first time he did and was lucky to survive. As of chapter 13, he can hold Kyoka's hand without issue. As the story goes, it is shown that he can touch a girl if it's to help her or fight her.
- Amazingly Embarrassing Parents: Ryouko Kagamiin to Kyouko. Constantly teases her daughter about Rintaro, even in front of the entire school.
- Catchphrase: Rintaro has a habit of saying Clear mind, silent and serene heart whenever he gets nervous, usually thanks to the girls, however, it's not working as well as he'd want.
- Charles Atlas Superpower: The school has a traditional contest where the objective is to see who can demolish parts of buildings fastest with just their own strength and skills.
- Clothing Damage: Much to Rintaro's dismay this happens frequently in most of the battles the female characters enter although he isn't above ruining a good uniform himself.
- Cold Turkeys Are Everywhere: A young man who seeks to avoid being sexually aroused ends up in a World of Buxom school.
- Distracted by the Sexy: Double Subverted, where Rintaro has a rare medical condition that means he could die if he gets sexually aroused. From a young age, he was trained intensively in martial arts and meditation specifically to keep himself focused and detached from sexual desires. Unfortunately, while attempting to get himself transferred to an all-boys school to avoid temptation, he ends up in a school with a vastly majority-female student body, most of whom tend to be a Ms. Fanservice of one type or another. So while he tries to avoid it as much as possible, he definitely notices all the sexy around him.Rintaro: Clear mind, silent and serene heart.
- Dodge the Bullet:
- Rintaro and Kyoka dodge a lighting strike.
- Earlier he pulls off a Matrixesque Bullet Dodge... against panty shots.
- Fanservice: So much that it might kill Rintaro - literally.
- Gone Horribly Wrong: During the battle royale after summoning the 3rd and 2nd-year students to the school's coliseum Rintaro destroyed the prize for the competition so that there wouldn’t be a reason to fight anymore. However, all Rintaro ended up doing was gather a bunch of Blood Knight into one locationRintaro: The situation has become worse and it’s not just worse. It’s possibly the worst outcome
- Gratuitous Animal Sidekick: Kito, the red hamster.
- Green-Eyed Monster: Ayane used to do a poker face and "twitch" every time some girl gets interested in Rintaro. In time, Rurina, Kyoka, Ren, and Rino have the same reaction for the same reason, in different situations.
- Hand-or-Object Underwear: Rintaro has a technique to turn leaves into this for women who expose themselves, covering their groins, butts, and nipples. And then goes overboard to make them look like shrubs with their faces exposed.
- Holding Hands: Rintaro and Kyoka end up inadvertently doing this when they dodge a lightning strike. Happens with Ayane too chapters later.
- Hot Teacher: Rintaro's and Ayane's homeroom teacher.
- Hospital Hottie: The female doctor that diagnosed Rintaro as a kid and accidentally brought on his second near-death episode just by turning around.
- Hulking Out: Marokichi can turn into a giant Hulk-like beast when exposed to too much Marshmallow Hell.
- Informed Flaw: While his heart condition was shown in the first chapter, Rintaro never seems to actually suffer from it, no matter how risque the situation is, and his paranoia about women (bordering outright gynophobia) causes more problems than his disease. He's supposedly cured by the end of the story, but he's still wary and cautious around girls.
- Internal Reveal: Rintaro reveals to Kyoka his condition in chapter 12. The whole cast learns about it in the final chapter.
- Ki Manipulation: Some of Rintaro's attacks are as these.
- Kryptonite Is Everywhere: Rintaro is allergic to fanservice, and he's stuck attending a school where he's surrounded by it.
- Marshmallow Hell: Marokichi, one of the other guys in the school, gets this from Asuna because enough of it turns him into a giant muscular beast whose perverted frenzies Asuna uses against her enemies.
- Mistaken for Gay: On at least two occasions. With how much Rintaro avoids them, you can't actually blame girls for thinking that he's "a player of other team".
- Mundane Solution: The cure to Rintaro's disease... it's ridiculous, to say the least.
- Muscles Are Meaningless:
- While hailed as being the most powerful and being larger than the other two Dragons, Kyouka looks more like a model and does not have the physique that leans to punching a six-foot man eight feet into the air. Rintaro, on the other hand, is sufficiently ripped due to years of training under his father. Marokichi however, averts this.
- The skinny old man principal who threw the insanely heavy dice that cracked the floor.
- Rintaro lampshades this by comparing Kyoka to a Saiyan when she does insane acts of strength.
- Oh, Crap!: Played for Laughs, whenever Rintaro is exposed to fanservice.
- Only Known by Their Nickname: Most of the girls are referred to and refer to each other by their martial nicknames. The acknowledged Dragons are referred to by their Dragon title out of respect.
- School of Hard Knocks: Fighting is a common theme in the school.
- Shout-Out: The entirety of chapter 30 is a shout-out to Mobile Fighter G Gundam and Mazinger Z.
- Super-Reflexes: Rintaro and the three dragons each have this skill. Rintaro and Kyoka have the skill to jump out of a lightning strike at the last second.
- Those Two Guys: Tamao and Kousuke. They are usually seen around trying to be perverted.
- True Companions: Meru, Ren, Marokichi, Rurina, Erin, Ema, and even Kousuke and Tamao are this to Rintaro. The last six become his faction when he becomes the 4th Dragon.
- Ungrateful Townsfolk: With shades of Girl Posse. "It doesn't matter how many times that geeky boy who keeps running from us like a vampire from sunlight performs many physical feats, fights as a master, and has the respect of the three strongest girls at the school, WE. DON'T. LIKE. HIM. Generally. But that girl we just met is awesome, we love her!" And that resumes how 99% of the school sees Rintaro, even after he becomes a dragon. To be fair, many of the Nangokuren female students are just a case of
Memetic Bystander who do nothing except watch and cheer while the main girls and their groups fight each other. Oh, well... Ayane's group doesn't hate him, but they aren't exactly his friends. - Weaksauce Weakness: Sexy girls for Rintaro, on account of his medical condition. And he is in a school with a female student body population likely accounting for 99% of the total population.
- Marokichi's Super Mode after surviving both Rintaro and Ayane's best attacks is finally stopped after accidentally being flashed by Rintaro's exposed "eel" due to Clothing Damage which snaps him out of his perverted frenzy and reverts him back to normal.
- World of Buxom: The number of girls shown with a bra size under a 'C-cup' can be counted on one hand.
