Heaven and Hell

I just realised that there are no decent Sephiroth pics in my gallery XD Coupled with reading crack fanfiction about Sephy's 'feral manliness' XDXD Thus this picture was born out of fangirly lust and 3 months of holidays stretching out before me...
How could I have neglected the icon of villain sexuality?! XD

The concept is simple: the link between Vincent and Sephiroth. Both were experimental products of Hojo, but both turned out completely different ^^

Heaven could refer to Seph's angelic form or Vincent's repentance to get there. Hell could refer to Vincent's transformations and Seph's demented nature. Take your pick. The picture is flippable for that purpose...

I plan to CG this, but knowing me, I'll probably never finish it XP Seph is supposed to be holding the Black Materia, while Vin's is undecided.

2B and HB pencils (running out of Chamyto ones T_T) on 100 gsm paper.
3+ days all together, with some references