Ouji Misaya (黄路 美紗夜?) is a popular senior at the Reien Girl's Academy.
The Oujis are an elite family where they adopt a successor who is talented. She's a respectable person who looks after students who follows the rules, but is strict on those who don't. She's known Kaori since they were in the elementary class. After her death she's been pursuing the reason why she had to die. Finding out that Hayama Hideo was responsible, she accidentally kills him. Not knowing what to do, she spoke with Kurogiri Satsuki. There she gained the power of the fairies. She also found out Satsuki was her brother with whom she got separated in her childhood but since it can be a part of Satsuki's hypnosis, the truth is unknown. She still believed in that and loved him regardless.