Ranmaru is the sub-boss of Ninja Master's and based off of historical figure, Ranmaru Mori. 300 years before the game begins, he was given the blood of a demon by his master, Nobunaga. Granted eternal life, he lived on past his master's death and traveled by himself. He returns to his master's side upon his second arrival. However, he is displeased by Haoh's hold on Nobunaga and goes to cleanse his master of the demon. In his ending, he burns Nobunaga and Haoh, promising to wait again for his freed master's revival.
 

 
 

ORIGIN: Ninja Master's