Bishoku-ka no Rule – Episode 1 (ES)

Reina Kirigamine is the epitome of seriousness wrapped in delicate beauty—top student, responsible daughter to her hardworking single mom, Miho. Desperate to lighten her mother's load, she consults a friend and ventures into an online dating site for quick pocket money through paid companionship. Her first encounter starts with hesitant negotiation: "How much would you pay for me?" Sweet promises and extra cash quickly break her resolve, leading her to expose her cute underwear in a park restroom as a compromising first step. Returning home with lingering guilt, she's shocked to find the same man waiting—her uncle, Yuma Watarase, a successful businessman already supporting the family. He orchestrated the meeting knowingly, using her secrets as leverage for financial aid to Miho while subjecting Reina to his lecherous desires. Despite her fierce verbal resistance and protests against this "unfilial" pervert, the powerless tsundere niece falls prey to his harassment and control. The story explores the dark shift from pure innocence to forced submission under family ties, packed with intense corruption, power imbalance, and erotic escalation.