After Tooru accidentally loses his secret fetish journal, he is shocked to discover that the school's model student, Chikage, is a fellow deviant eager to bring his fantasies to life. The situation escalates when his friend Nao and childhood friend Rino also enter the fray, sparking an intense competition among the three girls to win Tooru's heart by recreating the explicit scenarios written in his journal.
Tooru's secret fetish journal becomes a catalyst for his relationships with the women around him. After fulfilling his fantasies with the cosplayer Rino and the bold Nao, Tooru finds himself surrounded by women who embrace his perversions. Even when his landlady, Hibari, discovers the journal, it only fuels the girls' desire for him, leading to a chaotic and lustful competition for his affection.