With a sensitive and erotic body, Izumi, despite being strong willed, finds herself appointed as an intern nurse and getting taken advantage of by her former perverted vice principal.
This is a story about a sister, her brother, and their friend who has a crush on her, while being oblivious to the siblings' unusually close relationship.
Ayane Hiiragi is the student council president of the prestigious Seijo Academy, where she is respected by those around her and has a cute boyfriend to boot. However, she allows her perfect life to slowly fall into the depths of depravity...