K-pop girl group ITZY has achieved a viral hit with 'THAT'S A NO NO,' a B-side track from their 2020 mini-album 'IT'z ME,' which charted at #100 on Melon's Top 100 on March 24th. The song gained momentum after ITZY performed it for the first time during their new world tour 'TUNNEL VISION' in February, receiving enthusiastic responses. The performance video uploaded by JYP Entertainment reached #1 on YouTube's daily trending music videos chart and accumulated millions of views. The track also showed rapid growth on Melon's daily chart before entering the Top 100. Official content from the March 19th Mnet 'M Countdown' special stage garnered 2.02 million views, while the March 22nd M2 'Relay Dance' content surpassed 340,000 views, demonstrating sustained public interest. Additionally, ITZY's maknae Yuna successfully debuted as a soloist on March 23rd with the mini-album and title track 'Ice Cream,' featuring a refreshing spring aesthetic that will help maintain the momentum of 'THAT'S A NO NO.' The group will continue their world tour with international concerts starting in Melbourne in April, followed by performances in Sydney, Auckland, Tokyo, Hong Kong, Kaohsiung, Bangkok, and Manila.