Hisashi Yoshizumi lost his mother at a very young age, and has always lived with his father. One day after arriving from school, he finds out that he has a new mother and sister! A heartwarming family comedy ensues.
[from [url=https://ja.wikipedia.org/wiki/%E5%A6%B9%E3%81%A7%E3%81%84%E3%81%93%E3%81%86!]Wikipedia[/url]]