The 14-second clip consists of a cosmic fantasy-like theme with an outer space backdrop, an inverted mountain top, to a train passing by below.

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Check out the concept photos below featuring Jisung with his animated visuals with bright blue hair and a sailor outfit.  The personal handwritten message from the idol singer on the post card reads, "Cool, just like my hair!! When it's summer, I miss winter. And when it's winter, I miss summer."

Stay tuned for the full release on August 17!