I Became Invincible by Starting as a Villain's Lackey

Is your book unable to be used on other platforms? The first chapter of yours made me want to vomit. You knew you were kidnapped and knew someone would come to save you, but you didn't know how to change places?

There are too many unreasonable things to watch without thinking.

How does the protagonist know about the system if he has not traveled through time? Moreover, he has been reborn for many years. It doesn't look like him at all.

Too outrageous

To achieve a breakthrough in cultivation, one has to hide, and to help a big shot, one has to pretend