Responses
It is from the novel :)
It's by Moscareto! The same author for Punch Drunk Love, Willow Love Story and Dragon Making Love!
This one doesn't have a novel. Moscareto said this is an original manhwa they created and drew by themself.
Oh my bad! I read it before on twitter, I thought it was legit. Thank you for telling me!
man, i love this manhwa, entirely. yet tbh i think this work would be perfect as a novel. hope the author think about it some day