Living together with the next president in secret

Miori who spends her days scared by emails from stalkers. One day, he learns about it and introduces him to where he works. When he goes to the apartment where he is introduced without further details, he's a super high-end tower apartment! Moreover, he found out that his housemate was Reiji, the president's son... "Be my fiancee" as an exchange condition for hiding Miori. Reiji ordered him to live with Doki's son, who was poorly communicated, started living together... ...?