One summer, as a college student, I visited my friend's house. While struggling with school assignments, his mother, Satsuki, brought me tea. She wasn't wearing a bra, and her nipples were clearly visible through her shirt. I couldn't hide my shock at her exposed appearance. Through my friend's arrangement, I ended up staying at their home for about two weeks. During that time, Satsuki walked around every day without a bra, her nipples constantly on display. No matter how hard I tried to stay rational, I couldn't resist the temptation of her see-through breasts, and gradually, I found myself falling for her. This is a pure yet heartbreaking love story of forbidden desire.