# WebtoonLib — The Origin of Species #40

## Series
- title: The Origin of Species
- slug: the-origin-of-species-d4bb2a

## Chapter
- number: 40
- release_date: 2025-03-13

### Summary
This chapter shifts from the previous installment's raw emotional trauma to intricate world-building, introducing a pivotal, albeit confusing, explanation of species genetics. The core revelation is that both Seo Seunghyun and Lee Youngjin are rare, mixed-breed genetic anomalies, effectively a new subspecies of Alpha and Omega who are uniquely compatible. This biological framework, which readers speculate is the "Origin of the Species" referenced in the manga's title, recontextualizes their bond as a fated pairing, explaining why only Seunghyun can sense Youngjin's pheromones. This development immediately springboards into the chapter's primary plot driver: Seunghyun's decision to have Youngjin tested for pregnancy, a possibility that has electrified the readership and suggests Youngjin's supposed infertility may not apply to their unique pairing. Seunghyun’s evolution into a protective "green flag" Alpha is further solidified by his adamant refusal to view Youngjin's exploitative tapes and his quiet, simmering rage as he begins plotting revenge against the perpetrators. This chapter uses its complex lore to transition the narrative from confronting past abuse to building a future, cementing the central relationship through a unique biological bond and the dual promise of justice and a potential new family.
- summary_source: graph_aggregator
- summary_verification: unverified

### Key events
- It is revealed both leads are rare genetic anomalies, making them a uniquely compatible fated pair.

## Spoiler
- level: auto

### Safe teaser
This chapter shifts from the previous installment's raw emotional trauma to intricate world-building, introducing a pivotal, albeit confusing, explanation of species genetics.

### Spoiler summary
This chapter shifts from the previous installment's raw emotional trauma to intricate world-building, introducing a pivotal, albeit confusing, explanation of species genetics. The core revelation is that both Seo Seunghyun and Lee Youngjin are rare, mixed-breed genetic anomalies, effectively a new subspecies of Alpha and Omega who are uniquely compatible. This biological framework, which readers speculate is the "Origin of the Species" referenced in the manga's title, recontextualizes their bond as a fated pairing, explaining why only Seunghyun can sense Youngjin's pheromones. This development immediately springboards into the chapter's primary plot driver: Seunghyun's decision to have Youngjin tested for pregnancy, a possibility that has electrified the readership and suggests Youngjin's supposed infertility may not apply to their unique pairing. Seunghyun’s evolution into a protective "green flag" Alpha is further solidified by his adamant refusal to view Youngjin's exploitative tapes and his quiet, simmering rage as he begins plotting revenge against the perpetrators. This chapter uses its complex lore to transition the narrative from confronting past abuse to building a future, cementing the central relationship through a unique biological bond and the dual promise of justice and a potential new family.

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

## See also
- [WebtoonLib — The Origin of Species #40](/series/the-origin-of-species-d4bb2a/chapter-40)
- for_series_detail: /llms-series/the-origin-of-species-d4bb2a

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