(2) He Was The Strongest Magician, But Was Betrayed And Reincarnated As A Weak Child - Manhwa Recap

Ian was a magician in this world and was so powerful that he helped the Emperor win every war. However, when the Emperor no longer needed Ian he betrayed him by taking him out. Suddenly, Ian finds himself in his childhood body and has been given an opportunity to live his life differently.

part 1 - https://rumble.com/v2l2jf8-he-was-the-strongest-magician-but-was-betrayed-and-reincarnated-as-a-weak-c.html