Suzushiro Yuri

A third year student, and Takaya's older sister.
She is the school's talented student council president.
She may act friendly around other people, but only in front of her brother does she show her true colors.
She does her own work, but she forces her brother to do the annoying and troublesome things.
She cam girls to relieve the stress of acting like a good person.
Beating up her younger brother and using him as a tool is an everyday occurrence that does nothing to relieve her stress.