Bishoku-ka no Rule

Reyna is a serious and responsible young woman who wants to help her single mother financially. She signs up for a dating app to earn extra money through paid dates, hoping to negotiate like an adult. On her first date, she meets a man who quickly tempts her with a promise of good money, and she succumbs to the offer. The man turns out to be her uncle, Yuma, a businessman. After their conversation, he grabs his confused niece by the hand and leads her to a public toilet, where their relationship takes an unexpected turn.