# WebtoonLib — Dr. Stone #40

## Series
- title: Dr. Stone
- slug: dr-stone-5eb95b

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

### Summary
With Taiju's 3,700-year-long romantic quest finally fulfilled, the Kingdom of Science has little time to celebrate. The war against the Tsukasa Empire looms, forcing Senku to embark on his most dangerous chemical synthesis yet. In a scene reminiscent of a makeshift drug lab, the team works to create a powerful new substance, fully aware that a single misstep could lead to a catastrophic explosion, blurring the line between a scientific breakthrough and a home-brewed disaster.
- summary_source: graph_aggregator
- summary_verification: unverified

### Key events
- The synthesis of the Sulfa Drug (Sulfanilamide) begins to save Ruri.

### Characters involved
- Tsukasa Shishiou — character
- Taiju Ooki — character
- Senkuu Ishigami — character

## Spoiler
- level: auto

### Safe teaser
With Taiju's 3,700-year-long romantic quest finally fulfilled, the Kingdom of Science has little time to celebrate.

### Spoiler summary
With Taiju's 3,700-year-long romantic quest finally fulfilled, the Kingdom of Science has little time to celebrate. The war against the Tsukasa Empire looms, forcing Senku to embark on his most dangerous chemical synthesis yet. In a scene reminiscent of a makeshift drug lab, the team works to create a powerful new substance, fully aware that a single misstep could lead to a catastrophic explosion, blurring the line between a scientific breakthrough and a home-brewed disaster.

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

## See also
- [WebtoonLib — Dr. Stone #40](/series/dr-stone-5eb95b/chapter-40)
- for_series_detail: /llms-series/dr-stone-5eb95b

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