One Pace — Fishman Island 21

One Pace Fishman Island episode 21 ("Death Is Also Revenge") covers manga chapters 643–646.

Death Is Also Revenge

One Pace

Fishman Island 21Death Is Also Revenge

Manga chapters

Chapter 643
Chapter 644
Chapter 645
Chapter 646

Source anime episodes

Episode 562
Episode 563
Episode 564
Episode 565
Episode 566
Episode 567

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 643–646 re-cut from anime episodes 562–567.