Pretty Devil Paradise ~Millium Makai Dakkan Shirei!~

Millium is a probationary devil, who suddenly fell from the sky. Sota, the main character, and Millium has been peacefully living together since then. One day, a new student joins his class and a pretty girl moves to the next door. As a matter of fact, these two girls are succubi and their mission is to bring Millium back to their world. Well, will Sota be able to keep his lovelove life with Millium...?