Umihara has short hair, hair color is brown.
- Her name is revealed in Question 53.
- She, Uruka and Kawase are come from Nanao Municipal Middle School, and participate in swimming team since middle school.
- She knows Kobayashi in middle school, and falls in love with him after swimming competition.
- Inside reference - Umihara Kawase is the main character of a series of platform games by TNN/NHK SC, et al. The character is a young sushi chef with a pink rucksack who is lost in an underwater world.
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