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...

Sakasaki has been just admitted to a Japanese university, where he runs into his old childhood friend, Ikegaki Yuuta. He adored "Yuu-nii" in high school, but at one point he ended up sleeping with his girlfriend. Ever since then, he has kept his distance, but…