Somewhat Difficult, and almost impossible to beat.
I hope you didn't buy this, even if you like the challenge.
Also, I don't see how it is possible to get over Apprentice Duelist rank in the game. I like the challenge,too. Although I absoutely think that is too much. Well, that's my review, and I hope you like it.
Maybe you should try adding Yata-Garasu whenever you can, like in Second Year. (You're only allowed one Yata, however).