Bishoku-ke no Rule / Rules of a Depraved Family ~ Entertainment with Mei ~

Reina Kirigamine, a serious and responsible girl who is always looking for a way to earn money to help her single mother Miho. A friend suggests she use a dating site to make some quick cash. On the first meeting, Reina tries to refuse sex, but she is quickly persuaded with promises of big money. In a public toilet, her innocence is taken advantage of by an elderly man, who turns out to be her uncle, Yumo Watarase...