▲ This poster for the new single, "Blue," by K-pop singer Kang Daniel is provided by his agency, ARA. (PHOTO NOT FOR SALE)(Yonhap)

SEOUL, Oct. 21 (Yonhap) -- Singer Kang Daniel will release a new single, "Blue," at 6 p.m. Wednesday, his agency, ARA, said.

"Blue" is an unreleased song that Kang Daniel participated in writing and composing before enlisting in the military.

The song captures the subtle attraction between two people who vaguely recognize each other's feelings but struggle to find an easy answer.

Kang Daniel enlisted as an active-duty Army soldier on Feb. 9.

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