# WebtoonLib — Blue Lock #124

## Series
- title: Blue Lock
- slug: blue-lock-6a3d3a

## Chapter
- number: 124
- release_date: 2025-05-29

### Summary
The tragic source of the Itoshi brothers' bitter rivalry is finally laid bare. After facing the harsh reality of the world stage in Spain, Sae unilaterally abandoned their shared dream of becoming the world's greatest strikers, declaring his new ambition to be the best midfielder. For a young, adoring Rin, this wasn't a strategic change but a deep betrayal—a shattering of the promise that fueled his entire existence. This single moment of miscommunication and perceived surrender twisted their once-inseparable bond into a cold, vengeful feud, setting the stage for a devastating on-field confrontation born from a broken childhood pact.
- summary_source: graph_aggregator
- summary_verification: unverified

### Key events
- Flashbacks reveal Sae abandoning his and Rin's shared striker dream after returning from Spain, sparking their bitter feud.

### Characters involved
- Sae Itoshi — Supporting
- Rin Itoshi — Main

## Spoiler
- level: auto

### Safe teaser
The tragic source of the Itoshi brothers' bitter rivalry is finally laid bare.

### Spoiler summary
The tragic source of the Itoshi brothers' bitter rivalry is finally laid bare. After facing the harsh reality of the world stage in Spain, Sae unilaterally abandoned their shared dream of becoming the world's greatest strikers, declaring his new ambition to be the best midfielder. For a young, adoring Rin, this wasn't a strategic change but a deep betrayal—a shattering of the promise that fueled his entire existence. This single moment of miscommunication and perceived surrender twisted their once-inseparable bond into a cold, vengeful feud, setting the stage for a devastating on-field confrontation born from a broken childhood pact.

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

## See also
- [WebtoonLib — Blue Lock #124](/series/blue-lock-6a3d3a/chapter-124)
- for_series_detail: /llms-series/blue-lock-6a3d3a

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