The storyline involved humans and youkais, and it is one of my favourite themes. It is especially vivid in portraying the lives and thoughts of youkais, and through the MC we are able to see how they interact with humans. It is mostly funny and heartwarming. The MC is kind and at times reckless, but very loveable. The other MC is like the grouchy uncle who is annoyed but takes care of his nephew anyway. The story does not just talk about bonds between youkais, or youkais and humans, but also between humans as well. The stories are episodic, but sufficient attention is given so
that each character can properly flesh out.
The art is good. The characters look cute, art is clean. Most importantly, vivid colours are used so the whole anime gives off a warm and vibrant feeling. I especially like how the Underworld is presented. The art for the underworld is simply amazing - not just the architecture or the colours of the sky, but the detailed portrayal of a youkai community as well.
I give 10 for the sound. I'm the kind of person who fast forwards OPs and EPs, but pays too much attention on the voice actors. The two MCs are voiced by Maeno Tomoaki and Kaji Yuki, and they did a wonderful job. Their voices are unique and beautiful, and they played out their roles perfectly. Furthermore, Suwabe Junichi was also in the voice cast, and that is simply...wonderful.
Many of shonen animes like to give a sudden change of heart for the characters to push the plot forward, but personally I've always found them forced. Fukigen na mononokean does not have such character development yet. We just see a gradual shift in the personalities of the MCs - from shutting off from humans to accepting that some people can understand even if they can't see, and from not believing in youkais to hating them to understanding them and loving them. I think its believable, it matches the pace of the anime, and can be rounded off with a warm feeling in the chest and many hearty laughs.
I finished it in a day, that's how much I enjoyed it. It had nothing heavy, not those plots that require heavy brainpower to process, or so emotional that you just can't stop crying. It is extremely light-hearted, although sometimes it gets a little thought invoking, and just warm and funny.
Personally, I find it better than some of the more popular anime series from 2016. I am surprised so few people actually know about it. I think it deserves more attention. Although it is not a masterpiece, it is an anime that is worth the watch. I'd definitely recommend it.