Boku no Kanojo wa Haru wo Uru

A man meets a cute girl on a dating app and quickly they fall for each other. However, the girl lies about her job in her profile, saying she's in the fashion industry when she is in fact working as a prostitute. Eventually she reveals the truth to him, asking him: "Even if I date you, I won't quit my job. Can you still be with me?" He decides to stay with her but this decision is the start of soul-eating inner turmoil of dealing with the knowledge that his beloved girlfriend is giving her body to other men.