Plane Traveler

Use ancient martial arts against thugs and hooligans; firearms against ancient armies;

magical artifacts against archmages and martial saints; spells against alien weapons;

starships against monsters and demons...

In short, he gets the Reverse Star Disk and travels between different planes to conquer them!

When he's tired, he can have dinner in an ancient world, then head to a galactic world to catch a movie;

when there's nothing to do, he can raid resources in a cultivation world; when there's trouble, he can learn martial arts in an ancient martial world;

and when he's bored out of his mind, there are plenty of natives in the magic world to bully!

(This is not an infinite-flow novel.)