Kazuya Kamenashi will release a new digital single, titled "Diamond," on April 15.

"Diamond" currently serves as the theme song for Kamenashi's starring drama 'Stove League' on Lemino and WOWOW. Written by Sora Tomonari, it's described as song with a melancholic and transient sound that carries a powerful message. 

To coincide with the release, an artist follow campaign will be held, with all participants receiving an original picture of Kamenashi. Further details are available on his official website.