User blog comment:Yautja90/FTxRAVE Promo/@comment-7418318-20130723233410

It seems that they got Haru's voice actor on board for the OVA.

Upon Mashima's posting of Haru's animation correction sheet, Haru's voice actor Tomokazu Seki repeated, "Long time no see." - Source ANN

I wonder how many of the other "old" RAVE Master VAs they managed to hire.