Starting as a Naruto Grandmaster

I woke up to find myself in the world of Naruto, and I was the grandson of the Second Raikage? I'd even become the fiance of Tsunade, the Hokage world's top heartbreaker?

Holy crap! I was still a good-for-nothing? What? The Second Hokage and the Second Raikage were about to sign an alliance treaty? What should I do? Aren't they supposed to die here?

Huh? A Grandmaster System? Complete missions to randomly obtain peerless martial arts? Not bad, not bad. I can trade stolen kekkei genkai for top-tier internal cultivation techniques? That's awesome! Gather materials to forge peerless divine weapons? Great!

Second Raikage: "You're truly my grandson. You've developed the ninja-taijutsu to such an incredible level!"

Third Raikage: "What kind of ninja-taijutsu is this? It's powerful enough to hurt me?!"

Fourth Raikage: "What kind of ninja-taijutsu is this? It's even faster than me!"

Killer B: "With chakra this vast, you must be the jinchuriki!"

Tsunade: "Impossible! Wasn't he a useless live-in son-in-law? How did he get so strong?!"

Ma..

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.