My friend's mother

Ruriko, a single mother, lives with her son Yuto. I think I have to be strict with him, but I end up spoiling him, and Yuto has grown into a selfish personality. Perhaps because of this, Yuto, who thought he was not good at making friends, has become a friend called Kenji and has come to visit his house frequently. Ruriko is relieved, but the real reason Kenji is getting along with Yuto is her secret feelings for Ruriko. Ruriko has no realisation that she has such feelings...