animation:
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first off, the elephant in the room. yes, the animation is not even close to being close to being state of the art for 2025. it's limited motion, so it relies a lot on viewer's imagination to fill in the gaps in animation. limited motion has been used in amine since forever, it's in dragon ball, one piece, naruto, bleach, and if you don't specifically look for areas where they could have inserted awesome sakuga, you won't notice. also there are a couple moments of sakuga here and there that made me say "yooo, that's cool". and there's no jarring CGI, thankfully, as of yet anyway
art style:
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also I've seen may people say "the artstyle of the manhwa is much better", so I put them side by side and it's not. the anime just looks better overall. we also have kinda cool light effects for mana usage (though I still have mixed feelings on those), but the artstyle is good.
storytelling:
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the story is just perfect, probably one of the best works of fiction ever created, with awesome characters. good cliffhangers are a nice extra touch. it has similarities to Mushoku Tensei, but I'd say it is refined in many areas, and the best magic system I've seen so far. the pacing of the anime is good too, some skipped content here and there, like in any other anime, it is a faithful telling of the story.
bottom line, if you don't specifically look for ways to lose immersion based on art & animation it is worth it, especially for people who like isekai anime