Uzumaki Naruto's first mistake was to follow a lustful master to travel around the world. (Does it count as a jianghu?).
The biggest mistake was following a man named Uchiha Sasuke into his house. But, what happened to Sasuke's brother? Have you seen him anywhere?
He is not a young man with a strange life experience, and he doesn't want to encounter any mess. He just wants to return to Kyuubi Village and live with Mr. Iruka, but why can't he do it?