I think this series would be a lot better without constantly cutting to third parties re-iterating how awesome Eisen is, like this ep does repeatedly. That's middle school storytelling. Yes, you can tell us up front that X is insanely difficult, you can tell us afterwards that being able to do X was awesome (both standard for Isekai Gary Stus), but repeatedly cutting out to some gapejawed yokel going 'Wow, I've never seen someone do X!1' just kills your story momentum. I guess they needed some serious padding.