If the Uchiha had concealed his chakra, he would have been unable to sense the arrival of his soon to be foe. As Rusaku makes his way towards him, Madara would turn to the approaching signature a bit anxious, as somewhere inside he craved his status as Jinchuriki would draw forth conflict. He would let out a small cackle,"My, so brash. Go home before you get yourself hurt child..." Madara would see with the use of his Sharingan, that there was chakra focused into the eyes of his opponent, signifying to him the use of a Doujutsu,"But if not, show me your might..my eyes yearn for it.."
An unyielding aura of maliciousness would expel from the ancient shinobi, a type of enmity very few could think one man could hold. Chomei knew this feeling all too well, but knew such an animus was controlled, focused by Madara's sublime goal and his discipline. Like an ominous eclipse, the Uchiha's Sakki, Killing Intent, threatens to dwarf the confidence of the weak willed, drowning their hopes in a sea of unrelenting hate, possibly causing a paralysis like effect. Though such a thing is possible, Madara doubted it would act as anything but a warning sign to Rusaku, showing the man that Madara had complete intentions on killing him.
No light thrashing, no toying around, but complete domination. As Madara would speak, his eyes would take a unique transformation and something would appear to be crawling under his skin. One of his sclera would turn completely violet, the three encircling tomoe around the pupil would interlock, becoming a complete circle around it. Several others would appear as well, forming a ripple like pattern, extending from the iris to the sclera.
The color of his other eye would not change, however the pattern of it would.His Sharingan would evolve into his Eternal Mangekyo, appearing as three large tomoe with circles at their tops overlapping each their at the bottoms, with thick straight lines stretching outward and encircling the pupil. Manipulating his bones via Shikotsumyaku, the aged man would form layer of very dense bone beneath the epidermis of his skin, stronger than tempered steel.
Such a dense bone would also be formed from the bottom of his feet, growing and extending outward underground until erupting beneath Rusaku as three deadly pillars, threatening to skewer him like a Christmas hog. The speed at which the bones grow would be incredible as it would only take a few moments for the osseous matter to span the distance between the two.