HSODA-129 I want you to see my fully developed nipples! A quiet woman, Sunao Kui, has become obsessed with nipple play, with unusually high sensitivity and a boldly developed chest.

One day during his college years, a man who had passed out after a drinking party wakes up in his senior Kuui’s room. There, he discovers Kuui’s secret hobby and ends up in a relationship with him that they can’t tell anyone about. Time passes, and the man later gets a job at the same workplace as Kuui. The two continue their secret relationship as before. Their nipples, developed to be even more sensitive than during their student days, have become a source of pleasure beyond anything else. Kuui also trains the man’s nipples in the same way. The man becomes overwhelmed by a kind of sensation completely different from ordinary sexual pleasure. And a woman becomes aroused by seeing them like that. This is the culmination of a woman’s shocking record of obsessively pursuing nipple development.