Another one of Sanpeita's friends, she knows of Izumi's feelings. She is rather odd, with Ryouta asking if she was human during chapter 5. She has a fetish in regards to only seen wearing either the school bathing suit or PE uniform. She seems to care for Izumi very much, to the point that she blushes when having perverted ideas about her. She also seems to come from a very rich family. (Source: Wikipedia)
Sanpeita's well endowed childhood friend and classmate who harbors a crush on him. She happens to be attractive and tries to show her feelings, but Sanpeita is apparently oblivious. (Source: Wikipedia)
A very clumsy girl who as able to destroy a classroom from just one trip. She is an exchange student and has a petite and cute figure like that of Nozomi, though she has large breasts, and had to specially order a school uniform since she was that petite. She first meets Shingo while she was lost, looking for the staff room, and Shingo, accidently passing by, eventually helped her after trying to run away from when she called for his help. Much to Shingo's dismay, she transferred into his class and is seated to him. Due to her clumsiness, she has never had friends and befriends Shingo, though the only reason he is around her is help her with her clumsiness and to cure his gynophobia. After seeing that she has more of a figure then was believed previously, Shingo runs away terrified. In a attempt to cure her clumsiness so that Shingo would have a better opinion of her and to be close to him, she joins the boxing club due to Hijiri-sensei's persuasions.
Shingo's little sister, who until recently was the only girl Shingo didn't fear, mainly because she dressed like a boy. However, one day she started dressing like a girl and recently has gone through a big growth spurt, which makes her look much more 'mature' to the point she is constantly mistaken for a teenager (while she is in sixth grade). Subaru has a brother complex and is determined to be the only woman in Shingo's life (even wishing to have her brother's child and training to become her brother's woman, believing under a misunderstanding that means going through bondage training), where because of this, she usually treats Shingo's friends poorly, tricking them to do chores around the house when they come over. Becomes extremely possessive and jealous when other girls hang around her brother. Their mother doesn't seem all too motivated to disapprove of Subaru's feelings towards her brother, and is even shown enjoying movies with incest, even stating that the best woman for him would be his sister. (Source: Wikipedia)
The 16-year-old male protagonist. Several months ago he received a note from a girl asking him to meet her in private. After arriving, a morbidly obese girl takes her clothes off and confesses her love to him. Shingo becomes frightened because she is so huge, and tries to run away, screaming for help. The girl becomes very angry and flattens him within an inch of his life, putting him in the hospital for a month and claims he remembers nothing about the attack (ashamed he got beaten up by a girl). As a result of the encounter Shingo has permanent scars all over his body, and develops gynophobia, viewing all women as "dinosaurs," like the girl who attacked him. Shortly after returning to school, he decides to join the boxing club so he can protect himself from women. However, after joining he finds out, to his horror, that all the other members of the club are women. Even more terrifying, Shingo discovers that one of the members is the same girl that crushed him so savagely, but has since lost a lot of weight. Despite his gynophobia and his weakness toward women, it has been shown that his anger or fear (from something happening to the girls) can overpower his fear. However, because of his fear of women it has given him a sonar-like sense of his surrounding, telling him if a woman is near by, even if that woman is a ninja. A running gag throughout the series is even though he is terrified of women many women fall in love with him, most of the time through a misunderstanding through his fear of women. (Source: Wikipedia)
A cute boy that has an angel face. He's often mistaken to be a girl where he is constantly molested on the train and a lesbian wanted to date him, seeing that as the only way she would end up with a guy. Has a crush on Nozomi who is too devoted to Shingo to pay much attention and also a bit jealous that he is admired by the guys more than she is. He and Arahata are from the same school who up until recently, most of the guys believed he was a girl disguising herself as a guy to go to their all boys school. (Source: Wikipedia)
A tomboy and the heiress of a very traditional and wealthy family. She is a second-year student and the president of the school boxing club. Akira wishes she had been born a boy, and consequently often acts and dresses as one, to the extent of wearing boys' underwear and shunning bras. She enjoys being with Shingo, and has no qualms about stripping in front of him as she sees him as a buddy, much to Shingo's dismay. Despite her tomboyish demeanor at school, Akira behaves and dresses like a very proper Japanese lady while at her family estate, and is well-versed at traditional arts such as cha-no-yu (tea ceremony) and ikebana (flower arrangement). She is extremely afraid of her mother, and was once nearly married off to Shingo at her mother's behest, but like the other girls she has shown feelings for him and jealously towards other girls out of the boxing club that shows attraction to him. She is later shown to be accompanied by ninja bodyguards sent by her mother, one of which has a crush on Shingo because he was able to meet her eye to eye, something that had never happened to her before. (Source: Wikipedia)