Seoul: KiiiKiii, the youngest girl group from the K-pop agency behind the popular girl group Ive, has rapidly climbed domestic music charts with its latest single "404 (New Era)."

According to Yonhap News Agency, released on January 26 as the lead track of KiiiKiii's second EP "Delulu Pack," the song reached No. 2 on the Top 100 chart of Korea's largest domestic music streaming service, Melon, on Monday night. Additionally, it topped YouTube Music's weekly chart for the period of January 30 to February 5.

The achievement positions KiiiKiii among major K-pop performers, despite facing strong competition from long-running chart fixtures and older tracks that have seen renewed popularity due to streaming, such as Car, the Garden's "My Whole World," Hwasa's "Good Goodbye," Hanroro's "Landing in Love," and Woodz's "Drowning."

"404" is built on pulsing UK house and garage beats, featuring powerful rap verses and airy vocals. The song draws inspiration from the internet error code "404 Not Found," which KiiiKiii transforms into a metaphor for "freedom beyond boundaries." Rapper Omega Sapien of Balming Tiger, known for his witty wordplay, contributed to the lyrics.

KiiiKiii debuted in March 2025 under Ive's Starship Entertainment with "I Do Me," quickly gaining recognition for its melodic pop style and youthful image. The group's latest comeback showcases a Y2K-inspired concept and stronger beats, signaling a shift toward a bolder musical identity.

The group also leveraged a TikTok short-form challenge, which prereleased parts of the track and choreography before its official launch, aiding the song's rapid spread through algorithm-driven recommendations.

KiiiKiii's popularity surge on streaming platforms led to its first No. 1 on MBC's "Show! Music Core," marking the group's debut win on a major TV network's music program.

In a statement via Starship Entertainment, the members expressed gratitude for the support and shared their hope to remain "a team that people continue to look forward to."