One Pace — Fishman Island 17

One Pace Fishman Island episode 17 ("The General from the Future Land and the Crisis of Fishman Island's Destruction") covers manga chapters 636–637.

The General from the Future Land and the Crisis of Fishman Island's Destruction

One Pace

Fishman Island 17The General from the Future Land and the Crisis of Fishman Island's Destruction

Manga chapters

Chapter 636
Chapter 637

Source anime episodes

Episode 556
Episode 557
Episode 558

What One Pace is

One Pace is a fan project that re-edits the Toei anime to match the manga's pacing. It cuts filler, recaps, and stretched scenes, so a single One Pace episode usually covers the same ground as several broadcast episodes — here, chapters 636–637 re-cut from anime episodes 556–558.