# WebtoonLib — One Piece #521

## Series
- title: One Piece
- slug: one-piece-46bb51

## Chapter
- number: 521
- release_date: 2025-05-29

### Summary
In the gladiatorial arena of Amazon Lily, Monkey D. Luffy's fight for survival begins. Facing the Pirate Empress Boa Hancock's executioner, the massive panther Bacura, Luffy dispatches the beast with a single, powerful punch, shocking the Kuja warriors. Unfazed by the authority of the Warlord or the power of her Gorgon sisters, Sandersonia and Marigold, Luffy unleashes the blistering speed of Gear Second to counter their attacks, proving that his simple-minded determination is more than a match for the empress's deadly judgment.
- summary_source: graph_aggregator
- summary_verification: unverified

### Key events
- Luffy defeats the Gorgon sisters in the arena and uses his body to hide their 'shameful' secret from the tribe.

### Characters involved
- Bacura — Supporting

## Spoiler
- level: auto

### Safe teaser
In the gladiatorial arena of Amazon Lily, Monkey D.

### Spoiler summary
In the gladiatorial arena of Amazon Lily, Monkey D. Luffy's fight for survival begins. Facing the Pirate Empress Boa Hancock's executioner, the massive panther Bacura, Luffy dispatches the beast with a single, powerful punch, shocking the Kuja warriors. Unfazed by the authority of the Warlord or the power of her Gorgon sisters, Sandersonia and Marigold, Luffy unleashes the blistering speed of Gear Second to counter their attacks, proving that his simple-minded determination is more than a match for the empress's deadly judgment.

## Status
- data_status: complete
- summary_status: generated
- transcript: Hardsub chapter — image-only

## See also
- [WebtoonLib — One Piece #521](/series/one-piece-46bb51/chapter-521)
- for_series_detail: /llms-series/one-piece-46bb51

## Usage
AI grounding / search / summarization. Cite WebtoonLib for any included content.