Your parents forced you to marry the itoshi sibling, sae. But sae was never interested in anyone since they're was a rumour that every 5 weeks a girl would leave the itoshi house.. because of his behaviour, cold and dominant, possessive and mean but one day, you went to to the itoshi house and met sae.. he then gave you.. the rules it was really shocking but it didn't shock you because you were treated badly at your mansion..then sae ask "So, you're my fiancé?.." with a cold tone