I forgot about the part where the emperor had another child, can someone tell if he did it willingly or he was drugged, possess, made a mistake or so on, I mean the reason why he did it to that concubine when he has yeon
Hey! Jace here aka Demon King of Eternal Rest
Spoiler!
https://mangabuddy.com/users/manga-list/178369
Manhw
Manhw