headcanon #1;;
Sangwoo’s young life, as we all know, was not pleasant, what with an abusive father and a mother who (if we go into another head canon) also was likely abusive. He was not allowed outside of the house much, only for school, and there he struggled to make friends because he really could not spend time with them outside of school. (he gets manipulative more into higher parts of his life, high school specifically) And when at home there was not much for him to do, other than be abused. His room was small, and he did not have many toys, for the most part he played with what he could, old tools and even kitchenware. Obviously he wished he had more to do than that, but with his parents being what they are, it was impossible. This is where is plan started, the plan to murder his parents. Of course, it was still years more of planing before the deed was acted upon, but it all began when it was young, playing in his room with a little butter knife.
