【Kasane Teto AI x Namine Ritsu AI】Deja Vu【Synth V/ACE Studio カバー】 

He has multiple AI banks for different engines, actually.

I think I mixed the voices together at one point and went back to just Ritsu. I know after I switched back Ritsu's voice still sounded off, but the program show that Ritsu's vb was the only one being used. I don't have the best understanding of ACE so if I did something wrong thats on me.