PERFECT PINK LOVER

Narumi, a university student, starts a part-time job as a callout escort with intercourse as an option in order to meet someone who has his ideal nipples. One evening, he is sent to a client who happens to have his dream nipples... the color, the shape... everything is perfect. However, the customer Reiji, an office worker, is dead drunk. Narumi leaves the place without doing anything, but he finds it impossible to forget about Reiji's nipples. He ends up visiting him again, and eventually they spend the night together. The more Narumi knows about Reiji, the more he wants to have closer relationship with him, not as an escort and his client. However Reiji isn't willing to go deeper, and he has a reason not to...

(Source: Houbunsha, translated)