Naruto: Transmigration Difficult Mode

Naruto anime series is intellectual property of Masashi Kishimoto and the Japanese company Shueisha.

I only own my original character Akai Haru.

This is the story of Akai Haru who was thrown into this world of ninjas where he had no cheat to rely on and would have to survive all the challenges thrown at him.

MC will be weak and will lose many times, will be a bit naggy at first but will grow out of it. He will not get stronger unreasonably fast, but he will grow stronger than all rookie 9 by the end of Shippuden.

No harem as they always feel forced, and I don't think with the kind of personalities all Kunoichis have it will be even possible to have a harem it will be very forced. And I don't want to insert any extra Original Characters.