Tecmo Koei's last character announcement for Musou Orochi 2 was none other than Ninja Gaiden and Dead or Alive's Ryu Hayabusa. Now another DoA combatant (and Ninja Gaiden co-star) is joining the battle with the addition of Ayane.
As revealed by Famitsu, Ayane will be joined by Nemea from the Zill O'll series. Other previously announced characters include Troy Musou's Achilleus and Blade Storm's Jeanne d'Arc.
Hopefully we'll get a nice in-game look at Ayane soon, just as we did with Ryu, pictured below.

Musou Orochi 2 is slated for a December 22 release for PlayStation 3 and Xbox 360 in Japan.
Via Andriasang