One Pace has not finished all arcs. Verify on the official One Pace website (onepace.net) that Punk Hazard and the transition into Dressrosa are complete. As of 2025, both arcs are complete.

Based on the syntax, this refers to a episode (or compilation) from the One Pace project, covering Episodes 683 & 684 of the original One Piece anime, which fall within the Punk Hazard arc (specifically labeled as "Punk Hazard 15"). The trailing En Su... likely indicates multilingual audio (English & Japanese) or subtitles (English, Spanish, etc.).

To avoid confusion like the Punk Hazard 15 vs Eps 683-684 mismatch:

A proper piece name (following standard fansub/release naming) would be:

: The episode dives deeper into the mad scientist's experiments on the kidnapped children and his ties to the mysterious "Joker".