Momoka Izumi is a quiet, serious honor student. She doesn't even do things like skipping class, and only observes swimming class. As her homeroom teacher, I propose one-on-one guidance after school to her, who actually can't swim. Momoka, who is improving rapidly and happily with pure eyes. However, the school swimsuit suits the fair-skinned and slender female student too well. The school swimsuit that clings tightly when wet. The navy blue school swimsuit accentuates the whiteness of her skin. And more than anything... nipples that are erect unconsciously. Nipples that are pointy and can be seen even through the school swimsuit. Even though I know it's wrong as a homeroom teacher, I want to touch them. Even if my life is ruined, I want to touch them. The nipples that protrude unconsciously from the school swimsuit drive a man's reason crazy. Faced with an innocent girl in the midst of growth, the middle-aged teacher decided to abandon his reason.
