YG Entertainment's TREASURE will hold a fan concert tour titled 'TREASURE THE STAGE 2026 NEW WAV: LIVE IN SEOUL' at Ewha Womans University's Hwajung Gymnasium in Seongbuk-gu, Seoul from the 19th for four days. This marks the group's first domestic fan meeting in 1 year and 3 months since March of last year, where they will premiere all tracks from their mini album 4th 'NEW WAV' released on January 1st. The album surpassed 1 million copies sold in its first week and topped major weekly album charts in Korea and Japan. The title track 'IF I' music video achieved 100 million views in record-breaking time. Members directly participated in setlist and corner planning, stating their desire to create happy memories with fans. Starting with the Seoul concert, TREASURE will conduct a 20-show fan concert tour across 8 cities including Osaka, Kanagawa, Hyogo, Aichi, Fukui, Fukuoka, and Tokyo in Japan.