One day when 10 years had passed since I lost my beloved wife, my son suddenly brought his girlfriend, Misaki. It's the first time since high school that her son has brought her home, and as her parent, I'm happy... Misaki-san is a woman who is one, no, two times older than her son, and I hide my confusion. I didn't. What's more, for some reason, I've been living with her for a while, and I've been chasing Misaki-san, who takes care of me like her wife.
