Other

Kitazawa—a classic time traveler with no cheats, no bloodline, and no background—managed to survive as a mediocre Chunin for over twenty years by keeping a low profile and being a teacher at the Konoha Ninja Academy.
    Just when he thought he could quietly live out the rest of his life in peace… a system activated.
    [Congratulations to the Host for turning six. The Strongest Hokage Training System is now online.]
    “…Wait. Six? Me? You’ve got the wrong guy! I’m 21!”
    Worse still, the system’s tasks were anything but normal:
    [Task 1: Help your deskmate Hinata retrieve her scarf.]
    [Task 2: Graffiti the Hokage Rock with Naruto Uzumaki.]
    [Task 3: Defeat Uchiha Sasuke and dominate the Ninja School.]
    [Task 4: Become one of the Three Great Ninjas besides Naruto and Sasuke. Workship Tsunade as your master.]
    "Tell me—how is a 21-year-old supposed to do these kinds of tasks with a straight face?! I’d rather jump off the Hokage Rock!"
    [Task Reward: Uzumaki Bloodline, Senju Bloodline, Yin Seal, Konoha Great Whirlwind...]
    …Well, it’s not impossible.
    ---
    "Also, check out my other novels: Harry Potter: From Young Wizard to White Devil! and Naruto: My Bedroom Connects to Rin Nohara 14 Years Ago!"