Ninja World: I Have a Life Simulator - Chapter 263 - : Obito: It Seems Akira Knows All Too Well About My Kamui’s Weakness

Qin Yichen returned to his youth with his memories of more than 10,000 years. Superb mental strength, advanced elixir formula, advanced martial arts.

- Description from xbiquge

In a parallel world filled with pet beasts, people tame, train, evolve, and trade beasts.

In the 5th year of Konoha’s founding.The battle between Hashirama Senju and Madara Uchiha at the Valley of the End had come to a close.In order to treat his elder brother’s injuries, Tobirama Senju resurrected a medical ninja from ancient times, hoping that this individual could prevent the injuries from shortening his brother’s lifespan.This medical ninja’s name was Emiya Shigen.