Choi Ye Na has officially made her solo debut!

On January 17 KST, the former IZ*ONE member unveiled her solo debut mini album 'ˣ‿ˣ (SMiLEY)' featuring title track "SMILEY." 

The upbeat track, featuring R&B star BIBI, encourages everyone to throw out negativity and instead face the world with a smile. In the music video, Choi Ye Na plays the role of a superhero named 'Smiley Yena,' whose superpower is to make others around her smile. BIBI enters the music video in a playful villain role; however, her sadness-starting powers are no match for Smiley Yena's positivity.

Meanwhile, 'ˣ‿ˣ (SMiLEY)' features five songs in total: "Before Anyone Else," title track "SMILEY," "LxxK 2 U," "Pretty Boys," and "Vacay."

Check out the full music video above!