The Weakest Lord in History

Are you really not curious about how a person who cannot practice or become stronger becomes the protagonist in a world of high demons? … I have an undefined style here and am full of frivolous manipulations. If you point out any bad points, I will avoid him next time; if you point out any wonderful points, I will strengthen him next time. At the end, I just couldn't stand it anymore... Can you tell me the reason why you gave up this book? Thank you very much!