The Morose Mononokean

The day before he begins attending high school, Ashiya Hanae becomes possessed by a strange fuzzy yokai and falls ill. Ashiya discovers the Mononokean, specialists in exorcising yokai, and meets the morose master Abeno Haruitsuki.

When Ashiya begins working at the Mononokean, the master Abeno tells him to pretend to not see any yokai other than the Mononokean's clients. However, the kind-hearted Ashiya is unable to keep his word, and the yokai won't leave him alone.

After making friends with his classmates Saga and Fushimi, Ashiya embarks on the high school life of his dreams. But before he has the chance to enjoy his new life, he's instructed to go to a temple alone to find and return a yokai's lost possession.

Ashiya asks to go with Abeno to a pharmacist in the Underworld. Though Abeno is reluctant to bring a human to the Underworld, he relents when the Mononokean suggests that Ashiya accompany him.

The Legislator, one of three influential figures of the Underworld, issues a rule that Abeno must bring Ashiya to see him. Unable to defy the Legislator's rules, Abeno is forced to pay a visit to him with Ashiya in tow. As Abeno hired Ashiya without informing the Legislator, he now seeks to determine for himself if Ashiya is truly worthy of being an employee of the Mononokean. What will the...

Abeno is hired by a certain yokai to find a human woman's missing ring and return it to her. Unable to find the ring on his own, he asks Ashiya to help. During their search, Ashiya demonstrates a surprising talent.

When Ashiya and Abeno see Zenko at school again, she asks them for help with a particular yokai. Zenko was bitten by a strange dog-like animal a few days prior. However, ordinary people can't see the bite mark, and Zenko, who was previously unable to see yokai, has begun seeing strange things. While listening to her story, a fox yokai suddenly appears behind Ashiya and Abeno. The yokai appears...

Zenko arranges for Yahiko to help around the temple while he stays with her. Ashiya is relieved, but he soon runs into another yokai. The bird yokai Jomatsu is concerned for his heartbroken mistress Princess Anmo, who withdrew into an egg shell she made and hasn't come out for a long time. Jomatsu has been searching for the Mononokean so he can return to the Underworld with Princess Anmo still...

When Abeno is hired to exorcise a yokai by a human, he unenthusiastically heads to the client's house with Ashiya and Fuzzy. The girl who hired him is unable to see yokai but is interested in the occult and seems very interested in their work.

When Ashiya and Abeno smell a yokai on the potatoes Yahiko has been sneaking, they head to the farm where they were grown. There they encounter a yokai called Nobou, who strangely is unable to leave the farm.

A yokai worshipped as a kami by humans and known as Okina-sama to other yokai comes to the Mononokean with a request: to send the blind yokai Tomori back to the Underworld.

Abeno visits the Legislator to inform him that Ashiya is no longer working for the Mononokean. Meanwhile, Ashiya stops by the Kiyakudo when he hears from Shizuku, where he runs into Big Boss Scree, a yokai he previously exorcised, and his children.

Reunited with the yokai he and Ashiya exorcised together, Abeno realizes the Mononokean still needs Ashiya. Abeno suddenly misses him, and with the help of the yokai, he decides to give his idea a try.