# WebtoonLib — One-Punch Man #78

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

## Chapter
- number: 78
- release_date: 2025-05-29

### Summary
The chaos of the monster invasion takes a personal turn, highlighting the surprisingly tender bond between the hot-headed S-Class hero Metal Bat and his younger sister, Zenko. Their protective dynamic provides a moment of heart amidst the escalating violence. Meanwhile, the internal logic of the Hero Association comes under scrutiny, as it's revealed that heroes have jumped directly from C-Class to S-Class before, casting Saitama's inexplicably low rank in a more suspicious light.
- summary_source: graph_aggregator
- summary_verification: unverified

### Characters involved
- Saitama — Main
- Zenko — Supporting
- Metal Bat — Supporting

## Spoiler
- level: auto

### Safe teaser
The chaos of the monster invasion takes a personal turn, highlighting the surprisingly tender bond between the hot-headed S-Class hero Metal Bat and his younger sister, Zenko.

### Spoiler summary
The chaos of the monster invasion takes a personal turn, highlighting the surprisingly tender bond between the hot-headed S-Class hero Metal Bat and his younger sister, Zenko. Their protective dynamic provides a moment of heart amidst the escalating violence. Meanwhile, the internal logic of the Hero Association comes under scrutiny, as it's revealed that heroes have jumped directly from C-Class to S-Class before, casting Saitama's inexplicably low rank in a more suspicious light.

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

## See also
- [WebtoonLib — One-Punch Man #78](/series/one-punch-man-4f9667/chapter-78)
- for_series_detail: /llms-series/one-punch-man-4f9667

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