Michima Shin is a struggling novelist. He has been happily living under the same roof with five mysterious beauties who range from their teens to 30s since six months ago. They give him a huge sum of 1 million yen a month as rent and living expenses for this rather bizarre living arrangement. There are several cohabitation rules and he is forbidden from asking them any questions. Then one day, an incident happens to Shin that causes everything to break down