A small swelling full of desire... One day, Mika Futaba, a student in my class, came to me for advice about her body, which is unique to adolescence. It seemed that she was troubled by the fact that she could not control her desire for her small but highly sensitive breasts. So, from that day on, I decided to further develop her adolescent small breasts under the pretext of "suppressing the desire for breasts". A total of 5 stories about the perverted nipple girl who has awakened her inherent perversion and turned into an obedient masochist, with her squirting body and submissive nipples, and the small-breasted M girl who cums over and over again.