# WebtoonLib — Sakamoto Days #20

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

## Chapter
- number: 20
- chapter_key: 20
- release_date: 2025-05-29

### Summary
Sakamoto's newly-formed team gets its first mission, with master sniper Heisuke joining Sakamoto and Shin on a trip to a museum. The mission quickly escalates as they encounter advanced technology, including stealth suits that give off distinct "Ghost in the Shell" vibes. Amidst the action, the chapter introduces a formidable and popular new character, Natsuki Seba, the head of the JCC's Weapon Production Department. While the found-family dynamic continues to grow, with moments of camaraderie between the crew, Seba's appearance signals a technologically advanced and dangerous new conflict.
- summary_source: graph_aggregator
- summary_verification: unverified

### Key events
- The team infiltrates a science museum to find a list of assassins, encountering Natsuki Seba.

### Characters involved
- Natsuki Seba — Supporting
- Heisuke Mashimo — Supporting
- Shin Asakura — Main

## Spoiler
- level: auto

### Safe teaser
Sakamoto's newly-formed team gets its first mission, with master sniper Heisuke joining Sakamoto and Shin on a trip to a museum.

### Spoiler summary
Sakamoto's newly-formed team gets its first mission, with master sniper Heisuke joining Sakamoto and Shin on a trip to a museum. The mission quickly escalates as they encounter advanced technology, including stealth suits that give off distinct "Ghost in the Shell" vibes. Amidst the action, the chapter introduces a formidable and popular new character, Natsuki Seba, the head of the JCC's Weapon Production Department. While the found-family dynamic continues to grow, with moments of camaraderie between the crew, Seba's appearance signals a technologically advanced and dangerous new conflict.

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

## See also
- [WebtoonLib — Sakamoto Days #20](/series/sakamoto-days-301993/chapter-20)
- for_series_detail: /llms-series/sakamoto-days-301993

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