姫榊 こさめ

Likes: Her twin sister
Dislikes: To be snooped inadvertently

The younger of the Hisakaki twins and You's classmate. Kosame likes to tease her friends but at the same time, keeps a lot of secrets. She has a calm and mysterious personality and often randomly takes sides in arguments. Like her sister, she is also a shrine maiden. Despite her habit of constantly teasing her elder sister, Kosame is actually weak to being teased herself.