Mu Ao, a rookie reincarnator, was abandoned by the Main God Space in his very first trial world, Naruto.
As Orochimaru stood before him, chuckling darkly, a passage suddenly flashed through Mu Ao's mind, and he spoke it without thinking.
"The pursuit of taking over another's body to achieve immortality is both foolish and futile. You must know that debts have to be repaid. Orochimaru, right? Your soul is rotting, and that eternal dream of yours is nothing but an illusion."
After saying this, Mu Ao suddenly realized that before losing his memories, he might have been a big shot.