Hell Mode: Yarikomi Suki no Gamer wa Haisettei no Isekai de Musou Suru—Hajimari no Shoukanshi - Vol. 12 Ch. 80.1 - Cooperation

[MangaDex]

 

[Otherworlder]

That dark elf king looks pretty good for being over a thousand years old. He'd have to be that old if his dad was missing and sealed away that long.