There are a lot of books like this one, but it is unique as the MC being overpowered is relative and the MC achievements comes from his own hardwork, it's not common out there as most MC achievements are more dependent on adventures. It's a good read if you are patient enough to see the MC power take shape, though the book is hurried, maybe that's what you find confusing with all the time skip, if you read it patiently, you will find it okay among other books like it.

Nice book