I dissagree. Sorry but I don't see it. They performed the same show twice so the DVD takes parts from both days (this is very usual practice) so it's likely the image they got from one day to have been preferable but dubbed with sound from the other. However I still don't see it. I'll tell you where I do see it though - Saikai. That's very likely. But I mean come on, I don't consider that singing anyway. They're just wispering some stuff and I bet the main reason that might not be live is cause Mana's voice has a ton of distortion on it to make it sound so feminine.
The reason the vocals don't appear to be on time in songs like Kyomu is because - and you'll notice this with the percussion as well - there's loads of sound effects on them, delay and echo included. There's the same amount of delay in fact all the way - bad timing once sure, but this is constant. And they don't sound the same as on the album to me at all. But this isn't proof of much cause they might as well have rerecorded them specifically for the live.
But anyway, having said all that, I'm not that opposed to prerecorded backing vocals at lives of this magnitude, especially since Kozi (whose singing is in question here I'm guessing, not Klaha's) was not a vocalist and had a lot of things to do on stage. You can't put up a show like that live all the way.
Sure, some of the instruments are canned, but the guitars, drums, vocals, and bass are completely real.
GuitarS? You must have been kind of drunk when you watched Scars of Sabbath if you were seeing 2 Manas on stage.
In other words, there was prerecorded guitar as well.