IF you want some good ideas you should check out these.

[ZeroNoID]

Its it's a very in depth Japanese shogun/samurai game.

I have a imported copy at  home.


https://en.wikipedia.org/wiki/Taiko_Risshiden#Taiko_Risshiden_V

 

[matmohair1]

- http://munkhjapan.blogspot.ae/2010/03/trip-to-land-of-ninjas-iga-ueno.html

 

[Yemeth]

- http://munkhjapan.blogspot.ae/2010/03/trip-to-land-of-ninjas-iga-ueno.html

Thanks for the link even though I hate how much Hollywoodisation is in there...

Of course Kuji-kiri has to be shown too  .

Even though I have already posted it, I still find this is one of the best sources on the internet about ninjutsu:

http://www.ninpo.org/ninpohistory/ninpohistory.html

http://www.ninpo.org/historicalrecords/histrec.html

Here is one link about Koga-ryu:

http://www.jigokudojo.org/koga.htm

Maybe, if I ever find time I will post all the links I have found in the years I have searched for a bit more serious discussions about Ninjutsu...