Yoko, the only child, is bringing her boyfriend home for the first time today, and Chika is eagerly awaiting him. When she first met Yoko's boyfriend, Atsushi, she was relieved by his sincere personality. However, as Atsushi said, "I don't have a mother, so I'm not used to the family atmosphere, sorry...", Chika was listening to him talk, but at that time, she didn't know yet. Atsushi had started to develop feelings for her beyond just being his girlfriend's mother.
