What did you do to me? Jaewon meets Jung-Wook at the dojo. Jaewon, who was overwhelmed by Jung-Wook when they met, recalls that Jung-Wook went to the same middle school, but he does not remember why he hates him. Was their relationship good? Was it bad? Did they hate each other? Did they love each other? Jaewon has forgotten every single memory with him; Now they try to find every memory they had with each other.