Kamijou Touma of a Stand-in Messenger

Kamijou Touma is still the same Kamijou Touma, but before entering the academy city, he strayed into a place called Arakizhuang, where he met a group of very interesting uncles, learned a lot from them, and became a stand-in messenger.Years later:
Misaka Mikoto: "How on earth did you know my mother?"
Shokuhou said, "I'd rather know how you met Kamijou-san."
Kamijou Touma: "My heart and my actions are as clear as a mirror, and everything I do is justice."
--------
Ten years of magic ban, eight years of JOJO, I have confidence in the basic setting and the portrayal of the characters, please rest assured.