where on the manga does it state its made up of chakra?
this is from naruto pedia cause im not looking up the page cuz i dont really care but read this and learn sumthin
---------------According to Tobi, for a Sharingan user to activate the Susanoo is a rarity.[2] Like the other techniques granted by the Mangekyล Sharingan, the user's eyes and body are strained while using Susanoo because it consumes a large amount of their chakra. Sasuke described it as feeling pain in every cell in his body which only grew from prolonged use.[3] Susanoo is formed through the materialisation of the user's chakra and as such differs in appearance as well as colour between users.
Despite Susanoo's impressive defensive capabilities, the protection it grants its user is not absolute. Even though it envelopes and anchors the user, Susanoo doesn't guard right under the user's feet, making it possible to attack from below. Also, a sufficiently strong blow will still result in damage, especially during the technique's developmental stages. The only known ways to attack the user while Susanoo is active, is either to draw the wielder out of the technique and then attack,[4] bind and restrict its movements, or to break the defence with overwhelming force.