There's Something Wrong with This Genin

Travel through time and become a genin of Hokage's cannon fodder, activating the god-level sign-in system. Others need three generations to practice ninjutsu, but Yamamoto Kazuki only needs to sign in. Wood Release, Sharingan, Sage Mode, Flying Thunder God - all Naruto's forbidden techniques are his sign-in rewards. Sandaime: I retire. Danzo: I'm leaving the group.