Fukigen na Mononokean

Abeno Haruitsuki, his employee Ashiya Hanae, and Fuzzy travel to the Underworld to perform a job for the Legislator. Together they help the Legislator with his work, but when Ashiya makes a mistake, he ends up delivering a document to the Executive, one of the top three individuals who govern the Underworld with the Legislator. Who is the Executive?

Ashiya is sent to deliver a scroll to the Executive at the Legislator's request. On the way, Ashiya runs into a yokai who looks like a giant beast. He attempts to flee, but when he learns the yokai is more considerate than he looks, he is relieved. After finding a lost object for the yokai, Ashiya hitches a ride on the back of the yokai to the Executive's Birdcage, since they happen to be going to the same place.

A yokai named Egen is scheduled to visit the mundane world. Egen, who dreams of establishing a school in the Underworld, will be observing Abeno and Ashiya's high school for a limited time. Ashiya does his best to help Egen. However, Abeno's foul mood leaves Ashiya bewildered. There's something bothering Abeno about Egen's visit, but Ashiya is completely unaware of what that is.

Innocent fox yokai Yahiko finds a cute little yokai in the mountains. Yahiko brings the yokai home and names her Kinako. Yahiko dotes on Kinako, and she grows fond of him. However, Kinako is too weak to remain in the mundane world and will eventually disappear. Wanting to save Kinako, Yahiko asks Abeno and Ashiya to exorcise her, but Kinako and Yahiko find themselves at odds when she refuses to go without Yahiko, but Yahiko can't return to the Underworld. Ashiya suggests a compromise...

Framed for robbery, Fuzzy is taken to "White Sand Prison," the residence of the Justice, another one of the Underworld's top three like the Legislator. Ashiya, who has come to the Underworld with Abeno to argue for Fuzzy's innocence, is shocked to discover the Justice's surprising true identity. Meanwhile, Abeno realizes another yokai is involved in the incident: the Executive, another one of the top three. The human-hating Executive is very displeased that a human is working for the Mononokean, a shop that has deep ties to the Underworld. And through the Executive's scheming, Ashiya and the Executive come face to face...

Ashiya's friends Saga and Fushimi invite Ashiya and Abeno on the photography club's overnight trip. Since the incident with the Executive, Ashiya has been able to detect yokai at a distance. However, he still hasn't mastered that skill, so Abeno uses the overnight trip to develop Ashiya's detection ability. Yahiko is invited along to help, but a prank he pulls on Ashiya draws out another one of his latent powers!

The Legislator suddenly shows up at the Mononokean. Angered by the Executive's harsh treatment of his subordinate and employee of the Mononokean, Ashiya, he has made a bet with the Executive and wagered Ashiya's banishment from the Underworld. However, Ashiya himself is hesitant about re-entering the Underworld... Meanwhile, Abeno and Ashiya's classmate Fujiwara Zenko's priest father has been hired by the president of the neighborhood association to investigation a location where a ghost has allegedly appeared.

"For just one day, I want to become human and dance with them at the bon festival dance." Ashiya and Zenko bring yokai Keshi to the Mononokean where they work together with Abeno to disguise her as a human so they can enjoy the Bon festival dance together. After granting Keshi's wish and sending her back to the Underworld, Abeno collapses from exhaustion and falls asleep. Abeno had just finished a job for the Executive, which he kept secret from Ashiya. Believing it's his own fault Abeno pushed himself beyond his limits, Ashiya feels responsible and worries for Abeno's wellbeing.

Hanae's mother Nara felt sick because of a yôkai. She gets energy back after Hanae pulls it apart from her back. She tells him that there were some incidents like this with Hanae's father Sakae when they were young.

Yahiko came to the annual festival in high school after Zenko. Haruitsuki takes him out to a mountain to play hide and seek, because Yahiko plays pranks. And then, he gets a clue to Sakae from Yahiko.

Haruitsuki and Hanae have to send bird-like yôkai brothers to Kakuriyo at the request of their foster mother Komon, however, the youngest brother has never flown.

Haruitsuki sneaks into the Justice's storage warehouse to search for pieces of information about Sakae. Meanwhile, Yahiko tells Hanae that he knew Sakae.

When Haruitsuki arrived at a shrine, Hanae is possessed by a spider-like yôkai Sasa. She has been sealed by Sakae, that's why she gets mad at Haruitsuki for having golden eyes and golden hair just like him.