All-Japanese Girl Group COSMOS of Youth Debuts at No.1 on Kpop Radar Weekly Fandom Chart

The K-Pop scene welcomes a promising new act as COSMOS of Youth, an all-Japanese four-member girl group, makes a historic entrance by topping the Kpop Radar Weekly Fandom Chart with their debut single “Lucky One”. Members Himesha, De Hana, Kamión, and A’mei collectively ignited global interest just days after their official debut on April 11.

According to the April 3rd-week tally (April 10–16, 2025) by Kpop Radar, the “Lucky One” music video amassed over 4.25 million views on YouTube. Additionally, COSMOS of Youth saw a remarkable spike of 9.1K new followers on Spotify – exponentially greater than the K-pop average of 1.2K. Their Instagram fanbase grew by 33K and Twitter supporters increased by 2.3K, far exceeding platform averages and signaling a red-hot global reception.

A spokesperson from Kpop Radar remarked, “Achieving No.1 on their debut showcases COSMOS of Youth’s undeniable global impact. Their exponential growth on Spotify and a variety of social platforms signals the emergence of a major K-pop contender.”

Other artists heating up this week’s chart include NCT WISH’s “PopPop” at No.5, Yunise’s “SWISH” at No.7, 82 Major’s “TAKEOVER” at No.9, and Odd Youth’s “I Like You” rounding out the Top 10.

The Weekly Fandom Chart is powered by Space Oddity’s data service Kpop Radar, known for delivering a transparent and data-driven snapshot of fandom engagement through YouTube views, follower counts, and streaming metrics. Reflecting K-pop’s uniquely global audience – with over 90% of its consumption coming from abroad – the chart utilizes real-time data from key international platforms.

Kpop Radar is also behind the fan-favorite platform BLIP, which offers comprehensive tools for fans and industry watchers to track growth across over 800 active K-pop teams. With live updates on music video views, follower surges, and their annual “K-pop World Map,” the platform continues to serve as a pulse check on the ever-evolving K-pop universe.