Rookie group CORTIS are on the verge of making K-pop history as their debut album continues its remarkable long-term sales run.
According to the latest Circle Chart weekly album ranking for February 8–14, the group’s first release, COLOR OUTSIDE THE LINES, has surpassed 1.92 million copies in cumulative sales, putting them within reach of the double million-seller milestone.
If the album crosses the two-million mark, CORTIS will become only the second act in K-pop history to achieve a double million-seller with a debut album, a record that underscores their explosive entry into the global market.

What makes the achievement particularly notable is the album’s growth trajectory.
The record opened with 420,000 copies in its first week, later crossing the half-million mark following music show promotions. But the real acceleration came during the group’s non-promotional period, when more than 1.4 million additional copies were sold between October 2025 and February 2026.
This kind of reverse growth, powered by live stages and organic buzz rather than active promotions, is rare for a rookie act and signals strong public interest beyond the core fandom.
Several high-profile appearances contributed to the album’s steady rise.
CORTIS gained visibility through:
Each new performance triggered noticeable jumps in album rankings, with the release even reclaiming No. 1 on the Circle Chart monthly album ranking in its fourth month.

The group’s unusual strength in North America has also played a key role in the album’s longevity.
In the United States, the debut record remained in the upper tier of both Top Album Sales and Top Current Album Sales on Billboard for three consecutive months. The album repeatedly climbed more than ten positions whenever new content or news about the group was released, highlighting the impact of their performance-driven promotions.
CORTIS are currently preparing for a comeback in April, and expectations are rising as their debut album continues to approach the historic two-million mark.
Having already swept multiple “first, fastest, and highest” rookie records with COLOR OUTSIDE THE LINES, the group’s next release is now one of the most anticipated new chapters among fourth-generation K-pop acts.
With sustained sales, global visibility, and a comeback on the horizon, CORTIS are not just chasing a milestone they are reshaping what a debut era can achieve in the modern K-pop market.