I've been working on two Katanas to get my Ninja a little more up to date. Senjuinrikio/Unji is a bit 2005. I went with the Store TP+8 one because...it's easy. Just do a bunch of WS. OK base DMG on it and I'll get stuck at 99% TP less often. The other one I'm doing is the DEX/Accuracy+ one.