kyokosama's manga / #Sex industry(2)

Yuuya is a good for nothing and Takuma is a successful business man with a strange hobby: he's gay and works part-time in a hole wall sex shop. One day, one of his customers turns out to be his own brother, then their relationship goes from siblings to lovers.

Mitsuru and Keita used to be close friends at school then one day Mitsuru disappears. Years later they meet again but now Mitsuru is working at a hole wall shop to pay off a debt collector.