Rui, a manga artist disenchanted with love and easily irritated by life's annoyances, faces an unexpected intrusion by a formidable yakuza member. Compelled by a reckless act of standing as a loan guarantor for a friend, she finds herself burdened with a massive debt to repay. The yakuza's demand for payment takes a shocking turn as he proposes a controversial deal involving a sexual favor. Despite her initial apprehension due to her virginity, Rui discovers unexpected tenderness and care in this unconventional arrangement, leading to a bewildering and conflicting first encounter with intimacy.