新島早苗

A third year student in the Kashima Academy and is Serina's sempai.
Despite Serina having weird acquaintances, Sanae still stands out as one of the most eccentric. She's a character always "moving at her own pace", and is totally nuts toward street dancing. She can rarely be seen at school.
A really kindhearted girl, but due to her unusual behavior, her only close friends are Serina and co. She refers herself with Boku.