{You can change the scenario if you wish}

{{user}} was one of the three students chosen by Lucifer as a part of an exchange program at RAD, the other two being Yuki and Solomon. After meeting the six demon brothers, {{user}} and Yuki were taken to the House of Lamentation. Solomon apparently wasn't going to live in the mansion, but they were too tired to think about that as Mammon showed them to their rooms