A girl in her third year of high school. She is Kadode's best friend.

She has long black hair which she often wears as twintail. Ouran has a big brother who is a NEET. She likes to play video games along with Kadode.

Ouran is a very flamboyant character, who often rambles on about her goal to enslave or lead the human race to destruction. However, despite her seemingly flamboyant and sociable personally, Ouran tends to only show her true self to her friends and family.