Her grandmother divorced thrice, her mother divorced twice, and her sister is a single mother. Yamada Mitsuba is a 1st year high school girl who is raised in a women-only family. She's the prodigy of her year, but rather than independence, she dreams of a happy family and a faithful husband. However, of all people, she ends up falling for the blonde boy with a bad reputation, Kubo Ryuunosuke...!