From the Start, I Was Naruto's Classmate, Then Turned Naruto and Sasuke into My Underlings

After being reborn as a classmate of Uzumaki Naruto, I bound myself to the Trouble-Maker System and took Naruto and Sasuke under my wing. Naruto, Second Pillar, beat them to death! Your sworn big brother will hold the line... Who could have guessed that the useless orphan who'd been held back two years in a row and trampled underfoot by the whole village was actually an unparalleled killer capable of kicking the entire shinobi world to pieces! Eight Gates? Rasengan? I can whip them up with a wave of my hand...