Yu is Yuki's neighbor - a college student living alone. Yu has a hobby of wearing T-shirts and see-through lingerie at home. One time, she forgot to take out the trash and in her haste, she didn't have time to change, which made Yuki see her outfit. She seemed to be more excited when others saw her. Today, Yuki still went to school as usual, but because of what Yu did, he had to go home to masturbate before going back to school. When he got home, he saw Yu taking photos in those revealing outfits in the hallway. Caught, Yu hurried back and dropped her phone. Constantly tempted, Yuki couldn't resist anymore, he took advantage of returning the phone to Yu to take her. Yu seemed to not resist and even went along with him...