Tsushima Satsuki♀

The protagonist’s senpai. As Yuno’s self-proclaimed manager, everyday when club activities start she drives away the male students who gather around Yuno. She has a certain aura where others don’t come near her. When she opens her mouth she says abusive things, so male students fear her, but she also has a gentle side she only shows to the protagonist. She enjoys spending time alone at the arcade instead of going home.

[from Gematsu]