Minase, a young girl living alone for the first time, feels insecure and finds comfort in her beautiful neighbor Mizukawa, whom she falls in love with. Day by day, her affection deepens until she embarks on a "forbidden operation": drilling a peephole to spy. Through it, she sees Mizukawa sleeping… and eventually her erotic side as well. Minase's youthful love spirals out of control, dreaming of kissing the neighbor she adores. Will she make it happen?