Do you know if the warlords have any official song appearances other than just Kamen no shita no namida? I keep thinking they sang in Best Friends because I swear up and down I hear Nazaa in it O.O Also, congrats on 18 years for souloftheseasons!//
I was under the impression that the Trooper and Mashou voice actors all sang in the Best Friends song. (And the voice actors for the other main characters too.)
This is to the best of my knowledge, and anyone is welcome to confirm or correct me.
Per khandri’s reblog post:
A quick check of the liner notes in the CD does indeed list all four Mashou seiyuu as singing in the “Best Friends” song along with most of the rest of the cast.