# WebtoonLib — Sakamoto Days #21

## Series
- title: Sakamoto Days
- slug: sakamoto-days-301993

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

### Summary
A trip to the museum takes a wild turn as Sakamoto's crew, including new recruit Heisuke, encounters members of the elite assassin group, The Order. The enigmatic, deer-headed Kashima and the formidable Osaragi make their move, but the situation escalates into a prehistoric showdown against a dinosaur exhibit. While his employees are caught in the chaos, the legendary Sakamoto is uncharacteristically giddy with excitement at the prospect of fighting a T-Rex, blending high-stakes action with the series' signature bizarre humor.
- summary_source: graph_aggregator
- summary_verification: unverified

### Key events
- The Museum Battle: Sakamoto's crew fights Kashima and Osaragi amidst dinosaur exhibits.

### Characters involved
- Mafuyu Seba — Supporting
- Kashima — Supporting
- Osaragi — Supporting
- Heisuke Mashimo — Supporting
- Shin Asakura — Main

## Spoiler
- level: auto

### Safe teaser
A trip to the museum takes a wild turn as Sakamoto's crew, including new recruit Heisuke, encounters members of the elite assassin group, The Order.

### Spoiler summary
A trip to the museum takes a wild turn as Sakamoto's crew, including new recruit Heisuke, encounters members of the elite assassin group, The Order. The enigmatic, deer-headed Kashima and the formidable Osaragi make their move, but the situation escalates into a prehistoric showdown against a dinosaur exhibit. While his employees are caught in the chaos, the legendary Sakamoto is uncharacteristically giddy with excitement at the prospect of fighting a T-Rex, blending high-stakes action with the series' signature bizarre humor.

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

## See also
- [WebtoonLib — Sakamoto Days #21](/series/sakamoto-days-301993/chapter-21)
- for_series_detail: /llms-series/sakamoto-days-301993

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