A.R.C.

A.R.C., allegedly short for オールアラウンドクラシック (ALL AROUND CLASSIC) was a hip-hop group formed in Gifu Prefecture. Within this group was the band A CAPRICCIO, in which Crystal Boy formerly participated, as well as NOIZE, in which HIDDEN FISH formerly participated. Notably, CHISA also formerly participated in this group. Furthermore, the member BLAZE collaborated often with the band ILLMARIACHI.

Mysteries
What is the proper name of A.R.C.? The listed source credits them as ALL AROUND CLASSIC, but the documentation for EZION credits them as "all round Classics".