Quick answer — Shuuhei Mutsuki worked on To Be Hero X (Music), I Made Friends with the Second Prettiest Girl in My Class (Music), Lycoris Recoil -Friends are thieves of time.- (Music) and 7 more anime.
Shuuhei Mutsuki worked on To Be Hero X (Music), I Made Friends with the Second Prettiest Girl in My Class (Music), Lycoris Recoil -Friends are thieves of time.- (Music), The 100 Girlfriends Who Really, Really, Really, Really, REALLY Love You (Music), Mistress Kanan is Devilishly Easy (Music), Three Leaves, Three Colors (Music), Killed again, Mr. Detective. (Music), Himegoto (Theme Song Composition) and 2 more.