# WebtoonLib — Who Can Define Popularity #25

## Series
- title: Who Can Define Popularity
- slug: who-can-define-popularity-9fed3c

## Chapter
- number: 25
- release_date: 2025-03-04

### Summary
The chapter introduces a significant and emotionally charged subplot focusing on a new character, Siyoung, who is identified as Siwon's sister. Readers witness her heartbreak as her crush on another woman, a blonde character named Yoonjung, is revealed to be unrequited. The central conflict stems from Siyoung discovering that Yoonjung is romantically interested in her brother, Siwon. This realization culminates in a dramatic and memorable scene where Siyoung deliberately splashes coffee on herself to hide her tears, an act that readers found both tragic and humorous. This development simultaneously introduces Yoonjung as a rival to Daun for Siwon's affection, setting the stage for future conflict and potential misunderstandings, particularly surrounding two keychains mentioned by readers, which are likely competing gifts for Siwon. While the established relationships were not the main focus, this new storyline adds a layer of comedic tragedy and complicates the central romance.
- summary_source: graph_aggregator
- summary_verification: unverified

## Spoiler
- level: auto

### Safe teaser
The chapter introduces a significant and emotionally charged subplot focusing on a new character, Siyoung, who is identified as Siwon's sister.

### Spoiler summary
The chapter introduces a significant and emotionally charged subplot focusing on a new character, Siyoung, who is identified as Siwon's sister. Readers witness her heartbreak as her crush on another woman, a blonde character named Yoonjung, is revealed to be unrequited. The central conflict stems from Siyoung discovering that Yoonjung is romantically interested in her brother, Siwon. This realization culminates in a dramatic and memorable scene where Siyoung deliberately splashes coffee on herself to hide her tears, an act that readers found both tragic and humorous. This development simultaneously introduces Yoonjung as a rival to Daun for Siwon's affection, setting the stage for future conflict and potential misunderstandings, particularly surrounding two keychains mentioned by readers, which are likely competing gifts for Siwon. While the established relationships were not the main focus, this new storyline adds a layer of comedic tragedy and complicates the central romance.

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

## See also
- [WebtoonLib — Who Can Define Popularity #25](/series/who-can-define-popularity-9fed3c/chapter-25)
- for_series_detail: /llms-series/who-can-define-popularity-9fed3c

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