 If you liked
Katanagatari
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 ...then you might like
Hunter x Hunter (2011)
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Katanagatari revolves around people fighting with swords but they vary in attributes and even in form, similar to the concept of Nen. You're presented throughout an episode how they work and how to combat them, reminiscent of Hunter X Hunter's power system. I'd say there's a definitive comparison that comes around in an episode of Katanagatari, not to spoil but just like the former show, you get a clear sense of how underpowered the main characters could be. Not to forget both anime are very dialogue-heavy, with HxH's case it happens around the last arc.