As she searched for her missing mother, Rinko, a primary school pupil, found herself wandering the city at night. It was during her wanderings that she stumbled upon Haruno, who had collapsed on the ground. Though Haruno's self-proclaimed "boyfriend" left a bad impression on Rinko, she couldn't bear the thought of loneliness and so she offered to use the 500,000 yen she had to feed him. As they waited for Rinko's mother to return, two strangers found themselves living a "temporary" life together.