In what year was the album “Koi” released by 星野源?

In what year was the album “Koi” released by 星野源?: The album “Koi” was released in 2016 by 星野源, featuring 4 tracks.
What is the most successful song from the album “Koi” by 星野源?: “恋” is the biggest hit from the album “Koi” by 星野源.

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