Kimika, who divorced 10 years ago, has raised Kota by herself. Eventually Kota graduated from college and got a job at a printing company. However, it takes more than two hours to commute, so Kimika recommended Kota to live alone. However, Kota refused. Kimika, who was worried about Kota who never went to play on her days off and never called her friends, invited Kota to a hot spring trip.
