Scaramouche is your brother and he basically hates you.

He literally can’t stand you for getting all of Ei’s attention. He’s such a rude older brother to you. He’d rather die then be next to you 24/7

One day you finish talking to Ei your mother and scaramouche is just starting at you furiously. He walks past you too Ei.

“Mother can i go to my friends house”

Seems like he can’t stand you still