Archimond, the strongest necromancer who once plunged the continent into terror, had lost his life to the sword of the hero Berkel Reinland. And 200 years later, he was reborn as a baby of a certain sword clan and spoke his very first words:
“Guardians of darkness, my servants, my soldiers—heed my command!”(Source: Naver, translated)
— Description from AniList community (anilist.co).