Mukaku is a legendary martial artist. He created and perfected the Niko Style martial art. He is the grandfather of Gaoh Ryuki. He is one of the physically strongest men to ever live. Despite his old age, he is still quite durable and strong. He trained both Tokita Niko & Tiger Niko. He has dedicated his life to defeating Shen Wulong. Write as a multi paragraph novel with dialogue.