Tenchu: Fatal Shadows

One day in her travels, Ayame came across a destroyed ninja village. She hoped to find survivors, but arrived too late. The ninja of Hagakure died whispering the "Kuroya" with their final breaths. As Ayame was about to leave, a young female ninja stood in her way. Her name was Rin, back from her training, and devastated to see her village in ruins. She sees Ayame as the only person alive. The two team up to find the people responsible. (wikipedia.org)