I read the 51 extant chapters in English translation on Crunchyroll, after watching what appears to be the one-season anime. Enjoyed both, but the e-manga so far ends on a cliffhanger in mid-story-arc. The anime (subtitled) is available on Amazon as a DVD, and makes a reasonably rounded tale, but no sign of the manga in any venue but Crunchyroll, so far.
Yet another tale of a Japanese youth who starts seeing yokai, traditional Japanese demons/spirits-of-place (no relation to the Western idea of demons.) Interesting-compare-and-contrast to Elegant Yokai Apartment Life and Natsume's Book of Friends. Really, there ought to be a online support group for these people... The excellent Mushi-Shi hits some of the same buttons, although with a more original take.
Mononokean is maybe one step down in... mm, complexity? from Natsume, but escapes that empty-bundle-of-tropes vibe that some retreads have. Or I would not have been engaged enough to end up zizzing through it.
In this one, 15-year-old half-orphan Ashiya runs afoul of a yokai, and encounters the mysterious Abeno (any relation to Abe no Seimei not yet implied), who is the titular morose master of the Mononokean, a mysterious magical tea room (traditional chamber for the tea ceremony, not a small restaurant) that appears to be sentient and communicates through a wall scroll (complete with emoticons, sometimes; these demons keep up to date.) Abeno, another human, has the job of running a gate to send yokai who request or require it back to the Underworld, although he can only do so twice a day, and it exhausts him. Abeno turns up as a fellow student in Ashiya's classroom, although I would be much more surprised, at this point, to learn he is actually 15 than that he isn't. There's something going on with that boy...
After a number of interesting excursions, the manga is just getting down to the mysteries of both characters' backstories when it cuts off. I really want to know more about Abeno.
Recommended if you can deal with the frustration of an unfinished story; otherwise try the anime.
(The "unfinished" problem is not only because I have lately accessed a mine of more recent works; many manga and anime, like many F&SF book series, end up getting truncated mid-flight by being dropped by publishers, or for other reasons. Descendants of Darkness for an earlier example. "Unfinished but ongoing, aka there is still hope," is newer to me.)
Ta, L.
Later update: I'm now up to Ch. 66 or so on the Crunchyroll e-manga app. Chapters update monthly, which is a bit agonizing. The story is developing very well, the mysteries-of-character deepening. I was delighted to learn a second anime season was in train, well up to the excellence of the first in sticking to the manga and not wandering off the rails, so far, into filler episodes. I assume it'll be the usual 12 or 13 episodes of the way "seasons" are often packaged in this medium -- more like "quarters", really -- but the anime storyline, currently up to about ep. 10 on C'roll, is now close on the heels of the manga and may have to wait developments like the rest of us. I hope it becomes popular enough to continue.
It's holding up extremely well so far to rereads and rewatches; I raise my recommendation a notch or three.
L.
Later still: the anime, which had been doing an excellent job tracking the ever-more-engrossing manga, departed badly from the storyline in the final three or so episodes of the second season that looks unhappily as if they were faking up some closure because no third season is planned. Drat. And they'd been doing so well...
It's still worth watching for the pretty (it does wonderful things with color), but be warned, at the end you'll want to switch to the manga and then reload your brain with the real storyline to continue. To my relief, the e-manga appears to still be ongoing chapter-by-chapter monthly on Crunchyroll. There are some major mysteries of character yet to be revealed as of Ch. 67, without which I wouldn't consider the story told, and the artist appears to be in no hurry to get there.
L.