cosmosy

On December 2, 2024, the official SNS accounts of the group opened and subsequently teased the group's name and number of members. The next day, the largest mobile carrier in Japan, NTT Docomo, announced it would be venturing into the entertainment industry with its first girl group, cosmosy, which is modeled after the K-Pop industry's system. Moreover, NTT Docomo announced that the all Japanese member lineup consisting of Himesha, De_Hana, Kamión and A'mei would be promoted as a global girl group.

On December 31, cosmosy was introduced through the release of "zigy=zigy"'s music video. On February 3, 2025, it was announced that cosmosy signed with Sony Music Entertainment Korea. The same day, it was also announced they would releasing "zigy=zigy" on global streaming platforms as their first and pre-debut digital single on February 7.

Members

Timeline

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