Teen Ink

In China two ninja groups have a war to reason only known to the oposing side to captain Yutaka.  One of his men finds a young lady named Naomi who has lost her memory, she only knows her name and that she was taken from her grandfather my captain Masaru.  In twsiting and untwisting events we find out what happened to Naomi's family and why she happens to be the center piece of the war.