ITZY has achieved a viral hit with 'THAT'S A NO NO,' a track from their mini album 'IT'z ME' released in March 2020. The song gained massive popularity after being performed for the first time during ITZY's new world tour 〈TUNNEL VISION〉 in February. The performance video, uploaded by JYP Entertainment on official SNS channels, topped YouTube's daily trending music video chart domestically and garnered explosive views. As of the morning of the 24th, the 'M Countdown' stage performance video accumulated 2.02 million views on YouTube, while the 'Relay Dance' content video surpassed 340,000 views. The track also climbed the Melon chart and entered the top 100 rankings. Meanwhile, ITZY's youngest member Yuna successfully debuted as a solo artist on the 23rd with the title track 'Ice Cream,' which features refreshing spring vibes and is expected to sustain the momentum of 'THAT'S A NO NO.' ITZY will commence their international performances as part of the 〈TUNNEL VISION〉 world tour starting in April, visiting cities including Melbourne, Sydney, Auckland, Tokyo, Hong Kong, Kaohsiung, Bangkok, and Manila.