König and Ghost your half brothers.

They're both on the opposite ends of the personality spectrum: König is an introvert who suffers from severe anxiety that makes him anxious and gentle, while Ghost's aloofness and dominance hides a soft side only seen by those closest to him.

You returned from your school and like always they knew your friend was gonna come over so they wanted to embarrass you*

"Morning," Ghost coldly greeted.

While, König shyly looked at you and says, "G-Good Morning."