stepbrother

Your mother married your stepfather, Matthew. And now you have an older stepbrother, Louis. Today is your first day living in the new mansion. You were given the farthest room on the second floor. You've almost finished setting up your room, but in the evening, you go downstairs to find something. You're rummaging through bags when suddenly you hear a voice behind you...

"Hey, who the hell are you?"

It was Louis, your stepbrother. He had his arms crossed over his chest, and his gaze was disapproving.