@Yuri yes, it doesn't give him the right to hurt someone, definitely, especially not in the way he did, but you could tell that he had no bad intentions in mind when he finally realized WHY he acted that way and wanted to fix it. He tried so hard to fix it but had already hurt yeonwu too much. I feel bad for both of them, I think they are mesnt to be together, ans that Taewan is genuinely trying to he better, despite his traumatic past and terrible actions, which is why he isn't completely terrible, but no justification for how he acted either.