4th Gen Icons Karina and Ryujin Spark Global Viral Trend with 'THAT'S A NO NO'

aespa’s Karina and ITZY’s Ryujin teamed up for a dance challenge that has garnered millions of views across social media. The duo performed the choreography for ITZY’s track "THAT’S A NO NO," further fueling the song's resurgence.

Summary

Event	Detail
Primary Collaboration	Karina (aespa) and Ryujin (ITZY)
Featured Song	ITZY's "THAT'S A NO NO"

Key Facts

• Karina and Ryujin participated in the "THAT'S A NO NO" dance challenge on April 4, 2026.
• The collaboration went viral and earned millions of views shortly after posting.
• "THAT'S A NO NO" was originally released seven years ago.
• The track regained popularity last month following the first reveal of its official choreography.
• The song has remained on music charts for several weeks following its viral resurgence.

Key Terms

• THAT’S A NO NO: An ITZY track released seven years ago experiencing a viral comeback.
• Karina: A member of aespa who participated in the collaboration.
• Ryujin: A member of ITZY who performed the challenge with Karina.

Key Quote

"Released 7 years ago, 'THAT'S A NO NO' went viral last month after the official choreography for the song was revealed for the first time." — allkpop

Next

• Monitor if the collaboration improves the song's domestic and international chart positions.
• Track social media engagement as the challenge gains popularity.