Naruto: Obtain the Primary Immortal Body at the Beginning

He came through time inexplicably, and was in the same class as Naruto. He trained hard for ten years, opened the most powerful system, and awakened the primary immortal body. On the night of stealing the Sealed Book, take back the Sealed Book and obtain the Flying Thunder God Technique and the Technique of Multiple Shadow Clone. During the battle with Zabuza, he secretly rescued Zabuza and established a demon organization. In the Chunin Exam, he showed off his power, fought fiercely with Orochimaru, and reached a consensus with Orochimaru. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.