Chika, who is waiting impatiently for her only daughter Yoko to bring her boyfriend home for the first time today. And when she meets Yoko's boyfriend Atsushi for the first time, she is relieved to see her sincere personality. "I don't have a mother, so I'm sorry that I'm unfamiliar with the homely atmosphere..." Chika was listening to Atsushi's story, but she didn't know it at the time. Atsushi begins to have feelings for Chika that are more than "her lover's mother".
