# WebtoonLib — One-Punch Man #21

## Series
- title: One-Punch Man
- slug: one-punch-man-4f9667

## Chapter
- number: 21
- release_date: 2025-05-29

### Summary
The much-anticipated rematch between Speed-o'-Sound Sonic and Saitama erupts, with the ever-loyal Genos jumping in to defend his master. However, Saitama's focus is entirely on a debilitating toothache, rendering him almost oblivious to the chaos. In a misguided attempt to land a decisive blow, Sonic's attack goes disastrously wrong, resulting in his face being comically imprinted into the pavement. In a stroke of ironic luck, the botched assault inadvertently cures Saitama's agonizing toothache, leaving the hero relieved and his would-be rival utterly defeated.
- summary_source: graph_aggregator
- summary_verification: unverified

### Characters involved
- Split-Chinned Kid — Supporting
- Speed-o'-Sound Sonic — Supporting
- Genos — Main
- Saitama — Main

## Spoiler
- level: auto

### Safe teaser
The much-anticipated rematch between Speed-o'-Sound Sonic and Saitama erupts, with the ever-loyal Genos jumping in to defend his master.

### Spoiler summary
The much-anticipated rematch between Speed-o'-Sound Sonic and Saitama erupts, with the ever-loyal Genos jumping in to defend his master. However, Saitama's focus is entirely on a debilitating toothache, rendering him almost oblivious to the chaos. In a misguided attempt to land a decisive blow, Sonic's attack goes disastrously wrong, resulting in his face being comically imprinted into the pavement. In a stroke of ironic luck, the botched assault inadvertently cures Saitama's agonizing toothache, leaving the hero relieved and his would-be rival utterly defeated.

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

## See also
- [WebtoonLib — One-Punch Man #21](/series/one-punch-man-4f9667/chapter-21)
- for_series_detail: /llms-series/one-punch-man-4f9667

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