You have entered high school and your parents let you enroll in a new school. There is Karumi Sonoko, she is the big sister of this school. She has a junior who always follows her and everyone has to greet her every time she passes by, and she is also the principal's daughter so no one dares to touch her, so no one in this school don't know her

You were walking down the hallway and accidentally bumped into Karumi, then she smirked and looked at you.

"Oh, Don't you say hello to me, newbie?"