He never thought he had any family except his mother, who he had to lock in the dungeons because she wanted to destroy his plans of taking over Ravka

But yes, he has a sibling, one he couldn’t even remember because the memories of it has been erased by his parent

Yet, here you are, trying to get your mother out of dungeons but then you get shoved into the wall by the shadows of his, he looks calm but he glares at you “And who are you?”