5th Gen Male Idol’s “Bodily Reaction” To 34-Year-Old Star Is Going Viral 

SMTOWN concerts are known for creating rare and exciting interactions between artists from different SM Entertainment groups.

SMTOWN FAMILY PHOTO📸
in SMTOWN LIVE 2025-26 [THE CULTURE, THE FUTURE] in BANGKOK

ขอบคุณค่ะ กรุงเทพฯ!💞#SMTOWN #SM_30thAnniversary#SMTOWN2025_26_BANGKOK pic.twitter.com/lmrB6FUaHu

— SMTOWN (@SMTOWNGLOBAL) February 14, 2026

This time, the spotlight has fallen on an unexpected duo: NCT WISH member Sion and Red Velvet’s Irene.

With more than a 10-year age gap between them and a clear generational difference in the K-Pop industry, fans never imagined the two would share a moment on stage.

However, during SMTOWN’s traditional closing song “Hope,” Sion and Irene performed the rap part together — and the interaction quickly became one of the most talked-about highlights of the concert.

As the two stood side by side preparing for their part, cameras captured Sion visibly flustered. In several photos and videos circulating online, his ears appear bright red as Irene turns toward him.

sion’s ear turned red again when he’s near irene 😂　pic.twitter.com/oMH2EaVlmv

— ⁱ 🌷 (@sol_sapphirus) February 14, 2026

누나…. pic.twitter.com/MIBx3QQaGZ

— 𐚁 (@sionlovebot) February 14, 2026

The reaction didn’t go unnoticed. In one widely shared clip, Irene can even be seen laughing warmly at her junior.

260214 이 파트 아냨ㅋㅋㅋㅋㅋ#아이린 #시온 #IRENE #SION #SMTOWNLIVE2025_26_BANGKOK pic.twitter.com/wmIEN8xxue

— jomkub♡ (@imjommi) February 14, 2026

The moment instantly spread across social media platforms, with fans expressing how endearing they found Sion’s reaction.

260214 이거지 시온이랑 아이린 누나♡♡♡#아이린 #시온 #IRENE #SION #SMTOWNLIVE2025_26_BANGKOK pic.twitter.com/84cs4T46NJ

— jomkub♡ (@imjommi) February 14, 2026

시온이 귀 불타는거보고 깔깔놀리는중 pic.twitter.com/TeIIqK2PDa

— 나가복도 형복도에좀나가있어 리차이야폰쿨 黃 𝘓𝘦𝘦 (@T1OO1101) February 15, 2026

Rather than sparking controversy, the interaction has been received positively. Fans praised Irene for her comfortable and friendly attitude toward her junior, while also finding Sion’s shy reaction charming.