|Hair colour:||Dark violet|
|Occupation(s):||High school student (second-year)|
|Affiliation(s):||Sanada Central High|
Yanagin is a member of the 'High School Girls are Funky' trio.
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She is the bespectacled and tomboyish girl of the group. She is good academically and proficient in karate, full of crazy ideas and prone to violent outbursts. She was once part of the elementary school's strongest warriors to fight against the 'Archdemon'. After the battle, she was selected to monitor Habara and ended up being friends with her until now. She attends Sanada Central High.