My brother and I were aruging about why Kakashi fainted in the last chapter. He thinks it's because he just killed Rin so he just fainted for no reason. I told him it's because he unlocked the MS and fainted due to how much chakra it requires. I then told him Kakashi covers his sharingan to reduce how much chakra it uses, and he wants me to find the manga where it says that.
Can anyone help me find it lol, I know it was said somewhere in the manga, but idk where it is.