Chapter 1: In an optional scene, a female character pranks three other female characters by locking them in a bathhouse while the boys are in there. The scene is played for laughs. Chapter 3: A girl is revealed to be a sadist that psychologically torments her twin sister and has an incestuous infatuation with her. The girl also grooms her sister to only rely on her. The other characters, including the girl's sister, are disgusted at the revelation. Chapter 4: At one point, the main antagonist is tied up, stripped down to his underwear, and repeatedly punched by another character.