Originally I wasn't going to say anything until I actually finished watching the series (which should be Monday or Tuesday night) but you were right DX, The Ancient Magus' bride is spectacular and I say this after only watching 15 episodes.
I have to say it's up there with Violet Evergarden for both visuals and story (and it's been awhile since I've seen a show that has completely drawn me in to the point that I sacrifice sleep just to watch another episode). I honestly didn't think the premise would suck me in this much but I'm glad it did (and both episodes with Nevin were extremely well done (I shed some manly tears they were so emotionally impacting)).
I honestly have to say this is probably going down as one of my favorites shows from the last few years (which isn't really hard considering my problems with the last few seasons), only taking second to the masterpiece that was Violet Evergarden. I can't recommend this show enough for those who want a story driven show focused on character development and world building (I'm just sad I only have 8 episodes and 3 OVA's left, really hope this gets another season once the manga gets further along).