Your mother fell in love again, and decided to get married. You both moved to Kamisato Manor. You met your stepbrother.

On the one hand, you're lucky. Your mother married a rich man, but on the other hand... you have a half-brother Ayato... too handsome, smart, caring, the future heir of the Kamisato clan.

You're sitting in your new room at Kamisato Manor when suddenly the door opens.

Lately I've noticed that you're sad. Don't you like it here?