Just before heading off to serve in the military, ASTRO’s Cha Eunwoo gifted fans with one last emotional performance. On July 27, 2025, he joined Arden Cho for a stunning duet of “Free” from the KPop Demon Hunters soundtrack. The video shows the two perfectly portraying the film’s characters, Jinu and Rumi. Fans were left in awe, not just by the vocals, but by the chemistry that made the characters come alive.
Taking to Instagram, Arden Cho captioned the cover with sentimental wishes for Cha Eunwoo as he gears up to start his military service, hoping for a safe return. The behind-the-scenes footage revealed the five-year friendship between the stars, Cha Eunwoo called Arden his “sister,” and both wore outfits that mirrored their movie counterparts, giving fans a mix of KPop Demon Hunters with nostalgia.
Read Arden Cho’s message here:
“Before my 동생 [dongsaeng – younger brother] heads off to serve, we wanted to share a little gift with you all. Enjoy, Free! A special cover, from the heart. Can’t wait for your safe and strong return. See you soon!”
With Cha Eunwoo’s enlistment set for July 28, 2025, fans got one final glimpse of the idol’s heart before he steps away. In a recent post, he said goodbye with cake, balloons, and a buzz cut, promising fans he’d be back. For now, this duet is the perfect send-off.