No, he’s a good person who is actually caught between them. The author said that he still went to Haeyoung’s house to visit Haewon even after Haeyoung broke his arm, but because Haewon was being kept locked up in the basement, he didn’t realize that Heesung had come to see him.
can someone tell me what's the deal with Lee Heeseong? Like if there is NTR-ish involved? Does he also treat Haewon badly?