# WebtoonLib — Blue Lock #125

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

## Chapter
- number: 125
- release_date: 2025-05-29

### Summary
A flashback reveals the tragic origin of the Itoshi brothers' bitter feud. After facing the harsh reality of the world stage in Spain, Sae returned and coldly abandoned his and Rin's shared dream of becoming the world's greatest strikers. Declaring his new ambition to be a midfielder, Sae's dismissive and cruel words shattered his adoring younger brother's world, twisting their once-inseparable bond into a cold, vengeful rivalry that now fuels Rin's obsessive quest for greatness within Blue Lock.
- summary_source: graph_aggregator
- summary_verification: unverified

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

## Spoiler
- level: auto

### Safe teaser
A flashback reveals the tragic origin of the Itoshi brothers' bitter feud.

### Spoiler summary
A flashback reveals the tragic origin of the Itoshi brothers' bitter feud. After facing the harsh reality of the world stage in Spain, Sae returned and coldly abandoned his and Rin's shared dream of becoming the world's greatest strikers. Declaring his new ambition to be a midfielder, Sae's dismissive and cruel words shattered his adoring younger brother's world, twisting their once-inseparable bond into a cold, vengeful rivalry that now fuels Rin's obsessive quest for greatness within Blue Lock.

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

## See also
- [WebtoonLib — Blue Lock #125](/series/blue-lock-6a3d3a/chapter-125)
- for_series_detail: /llms-series/blue-lock-6a3d3a

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