In what year was the album “I’m Not Cool” released by HyunA?

In what year was the album “I’m Not Cool” released by HyunA?: The album “I’m Not Cool” was released in 2021 by HyunA, featuring 5 tracks.
What is the most successful song from the album “I’m Not Cool” by HyunA?: “I'm Not Cool” is the biggest hit from the album “I’m Not Cool” by HyunA.

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