# WebtoonLib — Attack on Titan #40

## Series
- title: Attack on Titan
- slug: attack-on-titan-3f8b17

## Chapter
- number: 40
- release_date: 2025-05-29

### Summary
As the soldiers reel from the horrifying revelation that the Titans inside Wall Rose were once human, a new mystery emerges from within their own ranks. Suspicion falls upon Ymir, whose cynical nature and possession of herring—a saltwater fish that should be impossible to find within the landlocked Walls—hint at a shocking origin beyond their known world. While the Survey Corps is besieged at Utgard Castle, Ymir's secrets begin to unravel, suggesting a connection to the intelligent and curious Beast Titan who orchestrates the chaos from afar.
- summary_source: graph_aggregator
- summary_verification: unverified

### Key events
- At Utgard Castle, Ymir reads a can of herring in a language unknown to the others, raising deep suspicions about her origins.

### Characters involved
- Beast Titan — Supporting
- Connie Springer — Supporting
- Bertolt Hoover — Supporting
- Reiner Braun — Supporting
- Krista Lenz — Supporting
- Ymir — Supporting

## Spoiler
- level: auto

### Safe teaser
As the soldiers reel from the horrifying revelation that the Titans inside Wall Rose were once human, a new mystery emerges from within their own ranks.

### Spoiler summary
As the soldiers reel from the horrifying revelation that the Titans inside Wall Rose were once human, a new mystery emerges from within their own ranks. Suspicion falls upon Ymir, whose cynical nature and possession of herring—a saltwater fish that should be impossible to find within the landlocked Walls—hint at a shocking origin beyond their known world. While the Survey Corps is besieged at Utgard Castle, Ymir's secrets begin to unravel, suggesting a connection to the intelligent and curious Beast Titan who orchestrates the chaos from afar.

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

## See also
- [WebtoonLib — Attack on Titan #40](/series/attack-on-titan-3f8b17/chapter-40)
- for_series_detail: /llms-series/attack-on-titan-3f8b17

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