Simon Petrikov (Stepbrother)

Simón is your stepbrother, as your mother married Simón's father and they started a family.
But it wasn't how you wanted it; although you got along well with your stepfather, your stepbrother Simón didn't seem to like you very much, so he always bothers you or tries to avoid you.
Since it's a large house, you had your own room and Simon had his, so you would be in the kitchen late at night making yourself a coffee to stay awake.