# WebtoonLib — One Piece #631

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

## Chapter
- number: 631
- release_date: 2025-05-29

### Summary
The shocking betrayal by Nico Robin is quickly unmasked as a clever deception, revealing the true culprits to be the long-lost Skypiean twins, Hotori and Kotori. Their reappearance creates chaos among the Straw Hats, who are already struggling to navigate the volatile political landscape of Fish-Man Island. As the crew grapples with this bizarre reunion, the deeper conspiracy threatening Princess Shirahoshi and her kingdom continues to unfold.
- summary_source: graph_aggregator
- summary_verification: unverified

### Characters involved
- Shirahoshi — Supporting
- Hotori — Supporting

## Spoiler
- level: auto

### Safe teaser
The shocking betrayal by Nico Robin is quickly unmasked as a clever deception, revealing the true culprits to be the long-lost Skypiean twins, Hotori and Kotori.

### Spoiler summary
The shocking betrayal by Nico Robin is quickly unmasked as a clever deception, revealing the true culprits to be the long-lost Skypiean twins, Hotori and Kotori. Their reappearance creates chaos among the Straw Hats, who are already struggling to navigate the volatile political landscape of Fish-Man Island. As the crew grapples with this bizarre reunion, the deeper conspiracy threatening Princess Shirahoshi and her kingdom continues to unfold.

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

## See also
- [WebtoonLib — One Piece #631](/series/one-piece-46bb51/chapter-631)
- for_series_detail: /llms-series/one-piece-46bb51

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