Monster Sonic! D'Artagnan no Idol Sengen S01 E02 The Great Roommate Shion

To start her new life as a pop idol, D'Artagnyan moves to a dormitory in the city. There, she meets Mustang, Nonno, Alice, and all the rest of the older idols, who tell D'Artagnyan about her legendary roommate. But what kind of person will she be?