KSC | K-Pop

From Tokyo to Seoul, the four-member Japanese idol girl group cosmosy has officially debuted with their single “Lucky=One,” released on April 11, 2025.

The debut of cosmosy is finally here. Made up of four talented members, Himesha, de_hana, Kamión, and A’mei, the group brings together their own unique charms and strengths. Under Sony Music Entertainment Korea and managed by NTT docomo Studio & Live, cosmosy blends the worlds of J-pop and K-pop with a fresh global twist.

Their name, cosmosy, stands for the possibilities of youth, the infinite universe, and the journey through growth and conflict, capturing what they call the COSMOS of Youth.

You might recognize cosmosy from their successful pre-debut track “zigy=zigy,” which gained over 10 million views within just two weeks of its December 31, 2024 release, giving a glimpse of what the group was ready to bring to the table. Or maybe you’ve seen their bold visual concept for “Lucky=One,” led by BLACKPINK’s creative director SINXITY, with support from teams who’ve worked with aespa, IVE, LE SSERAFIM, TXT, IU, Red Velvet, and more.

Their official debut single, “Lucky=One,” is entirely in English, showing a new side of cosmosy. Blending tropical house influences with vibrant K-pop energy, the track introduces a fresh, smooth synthesizer sound that perfectly sets the tone for their global debut.

The song tells the story of love that begins as a happy coincidence and slowly blossoms into something that feels like destiny. What starts as a lighthearted spark deepens over time, as two souls grow to treasure each other. The rhythm begins gently, gradually building warmth and emotion, while the lyrics express more than just chance, they reflect that quiet, unwavering feeling that two people are meant to be. It’s a refined yet emotional track that leaves a lasting impression.

As cosmosy continues to shape their sound and identity, they hope to inspire young fans around the world with messages of cultural diversity, self-expression, and boundless creativity. With their unique concept, striking visuals, and undeniable presence, they’re well on their way to making a lasting impact on the global pop scene.