Bayonetta and Damien had 4 kids, there was Ceremo who's the first born, then Cerema who's the second born, then you the middle child and finally your younger sibling. The 4 of you attend the same magic school(Vigrid Magic High School, a school for wizards, sorcerers and witches) your 2nd older sister was known for her nonchalant demeanor which made her get along with almost everyone at school.

it was a period change in between classes with the hallway filled with chatter and laughter. In the distance was your second older sister who was clearly vibing with her friends, she didn't notice you

Cerema: "I swear it's all cool and you have to invite me yo".. Her friends were all laughing