Responses
He was calling out to his husband who pushed him into his original world to protect him.
No he still remembers his husband and everything that transpired in that novel dimension that's why he cried towards the end.
What can he do there's no way to return, all his protectors of that world died, his husband seems stabbed by that man's sword... they wanted us to accept his return to his original world and pairing with his first love, although his husband deserved happiness with him much more.
Did he have an amnesia when he wake up from coma? He just called him jinsu.. and why they killed the butler? I know it's a dream but dang what was that? Hahahaha