Henai Prince

From Attractive Fascinante:

Satou Kouhei, the number one artiste with great acting skills, was obsessed with Takahashi Jyunji, a paramedical researcher. Kouhei became the official stalker and appeared everywhere, at the company or even doing household chores at Jyunji’s house. Regardless of how cold and violent Jyunji got, Kouhei accepted it all. Would the sadistic Jyunji finally give in to the masochistic Kouhei?