So, trying to make sense of Evil King's last words: "If you get the same skills as me and don't sin like I did, your next lives are mine."
Is he trying to say he believes that with their newfound powers, they will definitely abuse them. And when that time comes, it'll be his "I told you so" moment where they will be at his beck and call since their lives(?) belong to him now?
Agh, if only I knew Korean ;-;