# WebtoonLib — One-Punch Man #18

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

## Chapter
- number: 18
- release_date: 2025-05-29

### Summary
Still grappling with the surprisingly debilitating pain of a simple toothache, Saitama's day takes a turn for the nostalgic. A chance encounter brings him face-to-face with the Split-Chinned Kid, the very same boy whose rescue three years prior set in motion the creation of the Hero Association. Before this blast from the past can be fully processed, however, Saitama's self-proclaimed rival, Speed-o'-Sound Sonic, appears, ever eager for a rematch with the hero.
- summary_source: graph_aggregator
- summary_verification: unverified

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

## Spoiler
- level: auto

### Safe teaser
Still grappling with the surprisingly debilitating pain of a simple toothache, Saitama's day takes a turn for the nostalgic.

### Spoiler summary
Still grappling with the surprisingly debilitating pain of a simple toothache, Saitama's day takes a turn for the nostalgic. A chance encounter brings him face-to-face with the Split-Chinned Kid, the very same boy whose rescue three years prior set in motion the creation of the Hero Association. Before this blast from the past can be fully processed, however, Saitama's self-proclaimed rival, Speed-o'-Sound Sonic, appears, ever eager for a rematch with the hero.

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

## See also
- [WebtoonLib — One-Punch Man #18](/series/one-punch-man-4f9667/chapter-18)
- for_series_detail: /llms-series/one-punch-man-4f9667

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