Responses

I think what youre asking was if the blonde guy in chapter 1 (the one that got hit by a truck) was a real person or not right? Yes, the blonde guy was a real person and he was really hit by the truck and died. However he is not Yijun, the guy that Han Sekye has been seeing in his dreams. Yijun is just his delusion and it just so happened that the blonde guy looks like him.
Can someone spoiler me if the boy who died was a real deal dream lover or he just have mental illness?