Sage Art: Lava Release Obsidian Cloud Murder

After forming Lava within the body, the user exhales microscopic, lightweight, obsidian shards as a cloud of dust that rapidly engulfs the area. Upon breathing in these shards, the senjutsu chakra causes the shards to vibrate rapidly and grow slightly in the targets lungs, cutting them up from in inside, with death ensuing in seconds. The shards also inflict extreme damage on the outside of the body, while clouding the targets vision to the extend that not even the Byakugan can see through it. Sharingan users attempting to view the could won't see anything. Osamu attributes this effect to the Senjutsu nature of the attack, making it invisible to chakra vision.