Introduction:

He had been the best assassin of all time in his world and when he was finally killed, a goddess took the opportunity to send his soul into the body of a boy in another world who was weak for now but who was destined to become the most powerful mage of this world. This young boy was called Kevin and he decided to take his identity as he had kept his memories. The only thing he had in common with him was that they were both orphans, but Kevin had a weak mind and a weak body, in short, everything he hated the most. After successfully entering the Sun Sect as a mage, he managed to open the book Kevin had inherited from his parents and which he had been unable to open. ..