『Fangtasia』's manga / #past trauma(3)

https://www.mangaupdates.com/series/2e7ev7m/cold-zettaireido-no-koibitotachi

Uke was sexually abused at the orphanage by a CEO. Years later, the uke was revenge but the CEO ends up dead, so he decided to take revenge ilon the CEO's son with whole he had sex before at work (prostitution) as a client. The guy helping uke is the boss of the prostitution club business and he wants to manipulate uke into starting to work there again.