He first appeared in the GuitarFreaks and DrumMania series with his original song , Inside - Out , in GuitarFreaks V4 and DrumMania V4 in 2007 .
Ninezero is also the singer of Konami 's GuitarFreaks and DrumMania series .
Ninezero first appeared in the DrumMania and DrumMania series with Ninezero 's original song , Inside - Out , in GuitarFreaks V4 and DrumMania V4 in 2007 .
Ninezero is also the singer of Konami 's GuitarFreaks and DrumMania series .