This is a four-panel comedy manga about Kobeni Yonomori, who on her 16th
birthday suddenly has a young man with little presence named Hakuya
Mitsumine and his little sister Mashiro appear in front of her. It turns
out that Hakuya is her fiancé, and Mashiro is her future sister-in-law.
The three (and Konbeni's big sister Benio) start living together
underneath the same roof, and hilarious happenings occur.
