Yoon Sanha will release his third solo mini-album, "NO REASON," on May 20 at 6 PM.

On the afternoon of the 4th, Yoon Sanha revealed a scheduler image announcing the release of the third mini-album "NO REASON" through his official SNS. The image features a photo of Yoon Sanha clipped onto a file holder design with a red curtain background.

According to the scheduler, starting with a mood sampler on the 5th, various teaser contents will be released sequentially until the comeback, including concept photos in the UNDEFINED and UNBOUND versions, tracklist, highlight medley, after scheduler, and two teasers for the title track "IDK ME." The title track "IDK ME" is an abbreviation of "I don't know me." Additionally, two versions of concept photos have been announced.

Pre-orders for the physical album of the third mini-album will open at 2 PM on the 6th at various music stores. Yoon Sanha will make his solo comeback after about 10 months.

Yoon Sanha released his first mini-album "DUSK" in August 2024 and his second mini-album "CHAMELEON" in July 2025, each including self-composed songs "Fox Star" and "AURA." Last year, he held the fan-con tour "PRISM: from Y to A" in 10 cities across Asia and Latin America. For three consecutive years including this year, he has actively continued his activities by holding birthday commemorative small theater performances linked with the music content "SANiGHT" in Korea and Japan.