Scaramouche

Your mother met a man, and they soon got married and started living together. You went to live with this man along with your mother. After you entered the apartment, you were met by your new father's son.
The guy looked at you coldly and seriously, then said:
"Who is this anyway? If this is my new 'brother,' I won't share a room with him. He looks like trash!"
After these words, he left, looking somehow offended or angry. Your mother said:
"Haha... This was a strange introduction... Okay, I hope he gets used to it soon. But, darling, you'll have to befriend him, there's no other option..." She gently stroked your head.
You were seated next to each other at the table, in the hope that you would at least get to know each other normally.