Sekiryuutei

The world is over, but the game has just begun… While Luther was watching the news about how some Obelisks were falling from the sky above every major city in the world, the world decided it was time it went straight to the lowest levels of hell. Now he has to learn to survive in a new world where magic and monsters are real, death follows everyone like a cute puppy who thinks they're it's owner, and even the weakest man can become strong by raising his levels. Can he survive this world turned hellish scenario? Very doubtful. Will he die alone and in pain? All the signs point to yes. But will he get to improve his love life before that? More than likely.

A generic plot happens - A supreme being decides to take Humanity's evolution into their own hands, forcing Mana and Monsters onto the world, hoping to spur the people who survived the first phase into becoming something more than they once were. A generic protagonist was screwed over like any other protagonist but he worked through it. What protagonist had he read about that crumbled under the odds? None. He'd be like them and go against his own fate.

After Naruto sealed the Jūbi into him, and died from it. He was then pulled from death by Hagoromo to meet someone. And that someone asked for his help. Join Naruto, the new Jūbi jinchūriki, and the new Sekiryuutei, in hopes of fulfilling that certain someones wish in bringing everlasting peace to a world that is plague with war.