H02333 Kanojo wa Hanayome Kouhosei? Ep 2: Heir's Dilemma

Shinji grew up in an orphanage after his parents died. A maid named Zero tells him his grandfather is a millionaire who wants him to inherit the business, but Shinji prefers his own life and wants to marry his childhood friend Sae. The escape clause: find a girl with a birthmark that appears only after she climaxes.