The group KiiiKiii is gaining popularity with their new song "404 (New Era)." According to their agency Starship Entertainment, this track is the title song of KiiiKiii's second mini-album "Delulu Pack," released on January 26. "404 (New Era)" ranked number one on the Melon weekly chart (February 9–15). This is the first song released in 2026 to reach number one on the chart. The song continues its popularity by securing the top spot on the TOP100 chart just 16 days after its release.

As of 11 a.m. on the 18th, KiiiKiii also ranked number one on the Melon real-time chart and daily chart (as of February 16). Additionally, they dominated the weekly popularity award for two consecutive weeks, following the first week of February. The song also took first place on the YouTube Music weekly chart (February 6–12) and daily chart (as of February 12), Bugs weekly chart (February 9–15), and Apple Music popular chart, showing strong momentum.

KiiiKiii's popularity continues on global charts as well. On China's QQ Music, where all tracks from the album entered the rising charts immediately after release, the Korean chart (February 6–12) ranks second. The song also took second place on Japan's Oricon weekly streaming rising chart (February 2–8). As of the 11th, it ranks high on the Billboard Japan Hot Albums chart and Hot Shot Songs chart, maintaining global success.

After completing music show promotions for "404 (New Era)," KiiiKiii continues active activities. They achieved a triple crown on MBC M's "Show! Champion," MBC's "Show! Music Core," and Mnet's "M Countdown." Even after the end of music show promotions, many artists and creators continue the "404 (New Era)" challenge, and the song is still widely used as background music in public SNS posts, maintaining high public interest.

KiiiKiii plans to continue communicating with fans through various activities and content. They are establishing a solid presence both domestically and internationally with their new song "404 (New Era)," and attention is focused on what achievements they will accomplish next.