[Gavin Nugent]

Originally Posted by RhysMichael

Far outside my range of study but I thought haciwara looked like this

http://www.liongate-armsandarmour.co...25-1_small.jpg

I thought Hachiwara and Tekken did not have edges as such where this blade does look like a slightly bent omi no yari
http://www.ncjsc.org/gloss_yari.htm
Below is an omi no yari

Yes you are right about the image you produced, but for other variances of this weapon's appearances, refer to Stones Glossary.
The handle being of horn and it's shape and fittings are typical of these items, I too am no expert but I did look at these at length when I stumbled across them some years ago and found that the square blade(for want of a better word) and hook that appears in the image you provided are the norm, but they do stray far outside these boundries. For all intents and purposes, it could well have been a modified yari to produce this somewhat unusual item.

Gav