Is 66,666 Years: Advent of the Dark Mage Worth Reading? Review & Where to Read

Quick facts
Format	Manhwa, 186 chapters
Run	2021–present · ongoing
Community score	AniList 7.3 · MangaUpdates 7.2
Where to read	WEBTOON — official

Overview

Diablo Volpir was a dark mage powerful enough to go to war with twelve gods at once, and losing that war got him sealed away for 66,666 years. When he finally wakes up, it's not as the fearsome villain he used to be. He's a newborn baby named Jamie Welton, adopted into a warm, loving family with no idea what they've brought home. Nine years later, Jamie has only a sliver of his old power back, a family he's grown to actually care about, and a very old grudge against the gods who ended him the first time.

What it does well

The core tension, an ancient, unrepentant villain slowly discovering he doesn't hate the quiet, ordinary life he's been given, gives the story more to chew on than a standard revenge plot. Jamie's affection for his adoptive family isn't played as a weakness he needs to shake off; it's treated as a real complication to the single-minded revenge Diablo swore centuries ago, and the manhwa gets real mileage out of watching him not quite know what to do with that.

Starting Jamie at a fraction of his former power, rather than handing him back his full strength immediately, also does useful work. It forces the story to actually build his return to strength instead of skipping straight to unstoppable, and it keeps the found-family stakes relevant instead of making them irrelevant the moment he's powerful again.

The scale of the premise, a war against twelve gods, gives the manhwa room to escalate over a long run without running out of ceiling, and the worldbuilding around what Diablo actually did to get sealed away doles out just enough at a time to keep the mystery of his past alive.

Where it falls short

The setup leans on a familiar shape: overwhelmingly powerful figure reborn as a child, regains strength gradually, aims for revenge. If you've read a lot of this specific reincarnation trope, the broad strokes won't surprise you even if the found-family angle adds something real.

With a nine-year time skip covered quickly and a long-running story ahead of it, some of Jamie's early adjustment to his new life gets less room than the action that follows, so readers looking for a slower, more grounded coming-of-age angle may find that part rushed.

Verdict

This is a reincarnation revenge story that earns extra weight by giving its ancient, jaded lead an actual reason to hesitate: a family he wasn't supposed to end up caring about. It sticks close to a familiar shape for the genre, but the found-family complication and the long runway toward a war with twelve gods make it a solid, long-haul read for fans of the reincarnation power fantasy.