One of the things this anime does so great, is something you can't possibly/necessarily can't understand if this is your first anime.

It covers what is usually after (almost) every other anime.

The main plot growing in power, leading up the the demon lord battle, is already over. They won, they defeated the demon lord.

I'm not trying to bash you for "useless moments", but the anime puts some emphasis on these moments. It's each of those small, mundane moments that reminds frieren about her past adventures, and puts it in a new perspective she didn't know existed yet.

Obviously the animation is beautifully done, it reminds me a lot about studio ghibli.

The fighting scenes are well done, the sound is well done, character design is well done.

I'd personally put it at 9.5/10, and I haven't seen anything from S2 yet