Yu is Yuki's neighbor, a student who lives alone. Yu has a hobby of wearing T-shaped underwear and also see-through clothes when at home. Once she forgot not to take out the garbage, because she was in a hurry, Yu didn't have time to change her clothes, causing Yuki to see her embarrassing clothes. She seemed to feel more excited when she was seen by others. Today, Yuki still went to school as usual, but because the boy was erected by Yu like that, he had no choice but to go home, masturbate, and then go to school again. As soon as he returned, he met Yu taking pictures with those flimsy clothes in the hallway. Seeing that he was discovered, Yu rushed back and dropped his phone. Constantly tempted to make Yuki unable to control it anymore, he took advantage of returning the phone to Yu to take over her. Yu didn't seem to resist either, but also followed him...