Oh i thought you might Know Hatsune Miku since she was kind of responsible to the creation of Black Rock Shooter and the opening to it.XD Really no Vocaloid?Hmm the whoole thing is hard to understand so i get it that you might not know lol.XD
Yeah I watched them both...:D Although i think i prefer the OVA more then the Anime...Since they changed some things...>___< Which one did you like the most???:o Or did you like both?:P
yeah overheat thing so you have to limit your shooting and dodge or you'll overheat and be stunned for a while. Or you can use the overheat cooler when your overheated to cooldown.