The Development Studio has been frequently used by Mei since the start of her first school year in U.A. High. When Izuku Midoriya, Ochaco Uraraka, and Tenya Ida visited the studio for the first time in order to request adjustments to their costumes, they were greeted by an explosion caused by Mei. Power Loader implied that similar events have happened in the past. Having moved into the nearby Heights Alliance dorms, Mei was granted permission from Power Loader to use the Development Studio whenever she pleases.
- My Hero Academia Manga: Chapter 101 (p. 9).