Naruto: I Become the Strongest Ninja Through Sign-In Rewards

Mu Chen transmigrates to the Hokage world, only to be hunted by rogue ninjas the moment he arrives. Then he activates the sign-in System! The beginner's gift pack gives him a massive boost, granting him the Mangekyō Sharingan, Byakugan, and Sage Mode. He thought he could just lie flat and grow stronger at his own pace, but then he realized he had arrived too early and even ran into a pitiful little Naruto. After ten days of sign-ins, he gets Wood Release too. Just as he's celebrating, he runs into his idol Kakashi on a mission, only to be surrounded by rogue ninjas again. This is way too thrilling!