Dude...tht kinda make sense.. （￣へ￣）
Buddy, the saliva part is waaaay too far fetched.
copium and the self glazing of the ml???!?
the personality nature might've come from when he was still entirely human. as for the throw-up post kiss, could be from hormonal changes or emotional disconnection from previous trauma
I HELLA HOPE ITS LIKE YOU SAID CAUSE MY HEART CAN'T TAKE OTHERWISE
personal theory: notice how guwon never eats? i assume he's a zombie specie that is rational and can control his urges. that may be why he doesn't have memories of his past and is still adjusting to human ways. he might've thrown up bc he isn't used to the human taste, in this case, mc's saliva. he might be half-human half-zombie so he couldn't technically eat a human if he wanted