Takuro, a ronin student, begins to spy on Ichika, who has moved into the apartment next door. For Takuro, Ichika has been a childhood friend and someone she admires since she was little, and because of Takuro's deep-rooted, withdrawn personality, he can only peep at her from afar. As he spies on her every day, he overflows with the desire to get closer to her, and finally steps into her line that he shouldn't cross.