Naruto: Max Skill With One Click

Kai woke up in the Naruto world, but he wasn't a hero. He was just a regular Uchiha, stuck in the middle of a huge war. The Fourth Hokage was about to arrive, and things were getting dangerous.Suddenly, a voice boomed in his head, “Ding! One-Click Max Level System activated!”Kai was confused, but then he realized he could learn any jutsu he wanted, instantly!“Great Fireball Technique? Done! Max level!” He blasted a giant fireball with ease.“Shadow Clones? Done! Max level!” He was surrounded by dozens of his own copies.“Sharingan? Done! Max level!” He could see everything in slow motion, and his eyes glowed with power.“Sage Mode? Only one in ten thousand can learn it? Done! Max level!”Kai was unstoppable. He could learn any jutsu, no matter how difficult. The war was about to get a whole lot more interesting.