The Road to Defeating the Protagonist as a Max-Level Boss

After time travel, a max-level boss will be reborn into a different world created by the novel in his previous life after death, and start a new life. Whether it's a loser who accidentally acquires a mysterious inheritance and soars into the sky, or a cheater who is equipped with a magical system, or a good-for-nothing male protagonist with his own grandfather, a son of heaven with unlucky luck, a reincarnated immortal, a reborn person who reverses time and goes back to the past, etc. The hostility of many protagonists, but no matter what, in the end they will not turn into withered bones at my feet. Pretend to slap in the face? Cross-level challenge? Accompanying the strong? They're all just useless stuff. This book starts with the city, and then transitions in the order of martial arts, fantasy and immortality. Each stage will not be too strong and will have limitations. For example, urban novels naturally do not have fantasy-level abilities, and can only use some martial arts or minor spells. In addition to not destroying the balance, it is also considered that cities in the end of the law do not need too strong abilities. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.