♂ m

♀ f

A student under the protagonist's class, and the organizer of the Sex Research Club. A Japanese-American citizen born from a Japanese father and American mother. Inherited the blond hair and blue eyes from her mother. She's arrogant, haughty, and a pervert. Using her status as the prized granddaug... read more

A student under the protagonist's class, and the organizer of the Sex Research Club. A Japanese-American citizen born from a Japanese father and American mother. Inherited the blond hair and blue eyes from her mother. She's arrogant, haughty, and a pervert. Using her status as the prized granddaughter of the school principal, she looks down on everyone including her teachers. Inherited her mother's high sexual drive, and is basically a sadist type. Uninhibited and greedy when it comes to sexual pleasures. She established the Sex Research Club due to her parents having a low sexual affinity towards each other, which led to their divorce. Leads a daily sexual life to find the ideal partner (dick). She boasts a high level sex technique born from a deep experience, enough to put sex industry workers to shame. Interested with the protagonist who also divorced due to the same reason as her parents.

♀ f

A bespectacled girl who is a class president and the top student in her grade, both in academics and bust size. She's a level headed honor student, but her expression doesn't change much, which makes it hard to understand her thoughts. She isn't used to expressing her feelings, but in reality, she h... read more

A bespectacled girl who is a class president and the top student in her grade, both in academics and bust size. She's a level headed honor student, but her expression doesn't change much, which makes it hard to understand her thoughts. She isn't used to expressing her feelings, but in reality, she has a cheerful and kind personality. Has a thing for middle aged men, and after knowing that the protagonist just divorced, she went and asked him to have sex with her.

♂ m