CORTIS marks 100 days since debut with exciting fan club announcement

COER blends “COR” from CORTIS and “~ER,” representing unity and the fans’ role as the band’s driving force.

BIGHIT Music’s newest sensation, CORTIS, has officially unveiled the name of their fan club, marking a significant milestone just 100 days after their highly anticipated debut.

The five-member group, comprising Martin, James, Juhoon, Seonghyeon, and Keonho, has rapidly emerged as one of K-pop’s most talked-about rookies, drawing widespread attention and sparking conversations across social media.

100 days with CORTIS! ⭐️
you’ve made our hearts full and our days brighter. we’ll cherish every second — together and forever, our 5 🤍#Happy100DaysCORTIS #코르티스해피100일 #CORTIS #코르티스 pic.twitter.com/KCND73RlAM
— CORTIS CRAVE (@cortis_crave) November 24, 2025

Since their debut, CORTIS has been at the forefront of fan discussions, earning praise for their dynamic visuals and musical style, while also navigating a wave of constructive critique.

Their debut track, “What You Want,” was released on August 18, followed by its official music video the very next day.

The song made an impressive impact on streaming platforms, particularly Spotify, registering 133,647 streams on its first day, and surging to 324,884 streams on the second day an increase of 189,237 streams, highlighting the group’s growing global fanbase.

“What You Want” by CORTIS debuts with 133,647 streams on Spotify Counter. pic.twitter.com/NxPZUdeQMl
— Kpop Charts (@kchartsmaster) August 19, 2025

CORTIS revealed their official fan club name, COER, through the Weverse platform.

According to BIGHIT Music, a contest held in September received over 19,000 submissions for potential fan club names. After careful deliberation and consultation with the band members, COER was selected.

The statement explained:

COER blends “COR” (from CORTIS) and “~ER” (denoting unity), while resonating with the word “CORE”, symbolizing fans who support the group with unwavering dedication and passion.
The name signifies that fans are the core driving force behind CORTIS, joining the band to “color outside the lines” and push creative boundaries together.

BIGHIT Music expressed gratitude to fans for their steadfast support during the first 100 days and encouraged them to continue creating memorable moments alongside CORTIS as COER for years to come.

CORTIS’s Official Fan Club Name “COER”
COER - The name brings together “COR” (with CORTIS) and “~ER” (those who stand together), while also echoing “CORE” - the fans who support CORTIS with the deepest love and passion. - The name thus symbolizes the core driving force behind… pic.twitter.com/1ebbWU0320
— 星星 (@zhaoyufancokr) November 24, 2025

Managed by BIGHIT Music, the five-member group (CORTIS, an acronym for Color Outside The Lines) recently launched their debut single, “GO!”. BIGHIT Music is also the powerhouse behind global K-pop sensations such as BTS, Tomorrow X Together, ENHYPEN, and ILLIT.