Came across Flying Witch on Amazon Prime recently. Slightly odd anime. Witches living in a small, otherwise normal Japanese town. Not much happens. Slow pace. Yet strangely satisfying.
However I think it is brilliant for learning because language is simply and everyday (a pity it doesn’t have option of Japanese subtitles like Netflix). That isn’t to say I am understanding it all!!! Not by a long shot and I still need the subtitles but compared to some anime I am following a much higher percentage.
Only 12 episodes. I checked it out on Wiki and there was a link to the manga (free) and started to read some. So far the language seems as straightforward as the anime so highly recommended.
I managed it on my own a year ago (with a lot of looking up and not understanding everything perfectly), so agree that the language isn’t too difficult. I would say that it has quite a lot of dialectal speech though, from her cousin and uncle in particular - though they aren’t in every scene or chapter.
I found Aria quite a bit easier because it’s more “standard”, though I read that over half a year later so may have just been more experienced / advanced.