Rias Gremory (リアス・グレモリー, Riasu Guremorī) is a fictional character who appears in the light novel, anime, and manga series High School DxD authored by Ichiei Ishibumi. Rias is the main love interest of the main character, Issei Hyoudou. Rias is a high school student at Kuoh Academy, which, unbeknownst to most students.