KO1KEYZ Tops Billboard Japan Hot 100 With Half-Million-Selling Debut

Rookie boy group KO1KEYZ has made a strong start in Japan, topping the Billboard Japan Hot 100 and surpassing half a million sales with its debut single just one week after release.

The 12-member group, which debuted simultaneously in South Korea and Japan on October 7, recorded 525,248 sales for its self-titled single "KO1KEYZ," placing No. 1 on Billboard Japan's weekly Top Singles Sales chart for October 5–11.

The release also reached No. 1 on the Billboard Japan Hot 100 chart dated October 14, giving the group another major chart achievement during its first week of activities.

KO1KEYZ also performed strongly on Japan's Oricon charts with the single entering the Daily Singles Ranking at No. 1 on October 6 and remained within the top five for seven consecutive days.

It subsequently topped both the Oricon Weekly Singles Ranking and Weekly Combined Singles Ranking.

According to Oricon figures cited in the group's announcement, the release recorded 460,018 sales during the tracking period, the highest first-week total for a debut single released this year.

The group's early activities have extended to South Korea, where KO1KEYZ earned a first-place nomination on MBC M and MBC every1's Show Champion on October 14, one week after debut.

The self-titled debut single draws on the youthful and sentimental atmosphere of 1990s pop, exploring the excitement of meeting someone who makes ordinary life feel different.

KO1KEYZ consists of Daiki, Issa, Keito, Kosuke, Ryoga, Ryuji, Shinhaeng, Siyoung, Towa, Yoshiki, Yuki and Yura.

The group is also preparing for its first solo fan meeting in Seoul, scheduled for November 7 and 8 at Blue Square Woori WON Banking Hall. Moreover, all four sessions of 2026 KO1KEYZ 1ST FAN MEETING IN SEOUL have sold out.

KO1KEYZ will continue promoting its debut release through Korean music shows and online content.