Boku no Riyuu (僕の理由) has formed on February 28 as a solo project of Galmoneria's vocalist Metsu (めつ).

An MV for the debut song Fuantei Hiyori (不安定日和) has already been unveiled:

It has also been announced that there will be an upcoming mini-album, titled Utsuutsu Shiki Jinsei (鬱々しき人生), and will feature the aforementioned track. No other details have been released so far.