rose nasty beam katana hilt?

i was wondering how to make the hilt of the main katana of the rose nasty katana from no more heroes 2. you see there is a big anime convention in my area next month and because i share a similar build i decided to go as travis touchdown. for a refrence image here you go: http://itw.wikia.com/wiki/Travis_Touchdown (1/3 way down, the upper katana)