Hikaru, who has a young face, loves sex! That's why she seduces the men around her one after another! During a lesson with her tutor, she looks up at the teacher and confesses her feelings, leading him on. The teacher, who has completely fallen into the trap, is easily caught in Hikaru's scheme and is left limp... Even that's not enough for Hikaru, so she also lays her hands on her own younger brother. She blindfolds her pure younger brother and makes him climb the stairs to adulthood with a forbidden treatment...