Takuro, a ronin student, begins to spy on Ichika, who has moved into the apartment next door. - For Takuro, Ichika has been his childhood friend and admired person since he was little, and because of Takuro's dark and withdrawn personality, he could only spy on her from afar. - As he spies on her every day, he overflows with the desire to get closer to her, and finally steps into a line he shouldn't cross. - He was prepared to be reported, but from that day on, he was seduced by his girlfriend and had sex every day.