High-school freshman Yuzuriha Kyuuta made a promise with his childhood
friend Ririko to marry her when they grow up. Being seperated from her
since elementary school he now enrolls at her school, a former all girls
private school for rich young ladies which has just opened its gates
for male students, to meet her again. But upon meeting her, it turns out
he has to live in the girls dorm and she is the dorm head!? And what's
more, she doesn't seem to remember him at all! Just how will Kyuuta be
able to keep his promise?