Uruka is a 3rd-year student who has short violet hair with pink eyes. She is tanned and has a long ahoge on top of her head. She sometimes ties her hair on a few occasions.
She wears a school uniform with folded sleeves. When she goes swimming, she wears a white school team swimsuit.
Uruka is an active girl and excellent in sports, especially swimming. However, she is appalling in all academic subjects, and very reluctant to study. Once she is studying difficult topics, she burns out easily.
She loves Nariyuki since middle school and is willing to study English when Nariyuki helps her to meet admission requirements for English for the Otowa Sports University.
She is friendly and has good relationships with all of the main characters. She expresses likes and dislikes very easily, often makes Nariyuki unready to understand.
She is good at housework, but she does not tell that to Nariyuki and the other classmates.
- She knew Nariyuki, Kobayashi, Kawase and Umihara since middle school.
- She was once afraid of swimming in the early periods of middle school.
- She enrolled in Ichinose Academy by the principal's recommendation.
- She calls classmates by names with special endings, and "Nariyuki" for Nakiyuki.
- She is good at cooking.
- She can swim in any site, even in a hot spring.
- She is the only main character who has no significant conflicts with Mafuyu.
- She is the second girl to kiss Nariyuki. Though she thought it was how people commonly greeted each other overseas when it is actually supposed to be on the cheek.