Garasunomiya Garasu

Student council president of Garasunomiya school and one of the big three who hold the highest influence over the school. Because she loves Garasunomiya school very much, she goes to school earliest to do student council works and go home latest as she always walks around the school at night for lookout. She is also very strict about teaching manner and behavior to new students as suitable ojousama for the school.

Spoiler

Real name: Hiyama Garasu (桧山 硝子).