Kotone lives with her kind and humble father in a single-parent household, sharing warm and modest days despite their lack of wealth. One day, a man named Kudo suddenly appears, introduced as her father's friend. He claims, "I've lent money to your father," leaving Kotone confused and distressed. Worried for her father's sake, she finds herself unable to resist Kudo's lewd demands and is drawn into his twisted game. Torn by her love for her father and overwhelmed by conflicting emotions, Kotone's ordeal spirals deeper into humiliation, rape, creampie, uniform fetish, school girl, lolita, deep throat, and training.