The Kyomoto Samurai Special 22 fret guitar
Part Eldritch thing, part Samurai sword, the 22 fret Samurai Kyomoto Special looks like the sort of axe Sephiroth might whip out to perform in a Squeenix Cosplay Guitar Wolf cover band. Utterly awesome; completely absurd; totally not for sale.
Kyomoto Samurai Special [ESP Guitars via Crunchgear]

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I dunno, I think if he had sticked with just one of those designs (the buttom left one, methinks) for the body, instead of fusing four different ones, this might have turned out to be a kickass custom guitar design. This way, it looks like some 13 year old WoW-addict thought it up.
(as always, I give no statement diminishing the amount of work and effort this must have cost the creator)
mandatory dragonforce purchase
edit:
oh, but they have a truly wonderful custom ESP guitar up there, obviously based on the EC Series. If I ever wanted to be a true six-string ninja, I'd totally choose that ryu over any other school that is offered around here.
First off, screw you Brownlee, for knowing Guitar Wolf! I almost killed my liver playing the Wild Zero drinking game.
Secondly, I love this thing. It's ugly as hell. It's like the Soul Calibur of guitars. Guitar Calibur, maybe. Yeah.
Well... I was wrong. Japanese rock actually can get gayer.