Responses
Or maybe because of trauma? I just read somebody elses comment
Nope it's not stockholm syndrome. Sometimes a memory is too painful to remember so the person's mind decides to forget it. Also somebody else stated that it could be some sort of amnesia because he had an accident while doing a part-time job.
There you go, Stockholm syndrome at it's finest. Someone broken down believing he has real feelings for the abuser. If kim really loved Sungho, he wouldn't have forgotten about him, he would knew immediately when he saw him again.