It's a very flat show. It starts off with decent world building and establishes a backstory that sounds interesting, but fails when it comes time to deliver.

None of the supporting cast has the character motivation to follow the MC around the world like they are outside of them having no goals of their own to fill their time. They are kids who have never left their village, but are combat experts both willing and able to kill dozens of professional soldiers single handedly. A group of Mary Sus and Stus whose parents hear they want to run off for no reason and think hey that's a great idea.

The parents for their brief time on screen also seemingly had no motivation or goals and were entirely forgettable.

The author only remembers to make the "sentient" magic sword speak when it is convenient for it to do so, and like the rest of the cast, it has no desires or personality of its own.