Onechanbara Special is a PSP version of the Onechanbara with five playable characters, over 300 weapons to find, and plenty of zombies to coat your sword with tainted blood.
Like many PSP games, ad-hoc cooperative play was implemented into the game. But, what if you don’t have a friend to play with? Tamsoft has you covered. Onechanbara Special has a "virtual friend" feature, which substitutes a real life friend with a computer controlled ally. You can use cooperative play or the virtual friend mode in any of the game’s missions.
D3 Publisher has Onechanbara Special slated for March 24 in Japan. No word of a North American release at this time, but D3 localized Onechanbara games in the past.