Niten Ichii Ryuu

Based on purplewisp's JSON on the forums: http://smf.cataclysmdda.com/index.php?topic=8689.0

This currently is available at chargen (melee weapon training) or rarely from dojos; it lets users power-attack at mid-grade skill and work up to knockdowns and counter hits, topping out around skill 6.

Used with katanas, wakizashis, the standard quarterstaff, and the cudgel.  I'm pretty sure the bo (Japanese staff) was not ironshod, and the nodachi is a bit large for this sort of training: not an "inside" weapon.

Balance tweaks are welcome, and I'm prepared to add bokken/shinai, along with a mansion spawn group, if desired.
I've read the book of five rings several times, it gives no information whatsoever on the mechanics of combat.