It's been 10 years since he lost his beloved wife. One day his son suddenly brought his girlfriend Misaki home. It was the first time since he was in high school, and he was supposed to be happy as a parent... But he could not help feeling confused at Misaki being older than his son by 10 years if not 20. Besides, she ended up living with them for a little while for some reason, and he was getting attracted by Misaki who waited on them hand and foot.... Son Brings His Around 40 Girlfriend Around... Haruka Misaki.