A strange mask was attached to their faces, and Morihito, Kanshi, Keigo, and Miharu were transported to an unknown room while they were sleeping. The monitor in the room suddenly turns on and says, "My name is Zigzag. Play a game with me." A strange mask, a deep voice-changed voice, and orders from beyond the monitor. They were trapped in a death game, and Nico was a hostage.

The vampire Miharu Kiryu has moved into the Otogi household. Because he's a vampire, he tends to be a nightowl and lazily doesn't wake up until past noon. On top of that, he needs to siphon life energy to survive, so he immediately gets some from Morihito after waking up. He may not do well in a communal living environment, so will this further power up the chaos in the Otogi house?

"Visit the ancient retainer that exorcises evil." Nico's mother, Ibuki, has delivered a new prophecy. Ibuki has an idea who this "ancient retainer" could be, and tells Nico and her familiars to visit them. They were a bit of a ways away, so Nico, Morihito, Kanshi, Keigo, and Nemu head to the lands where this ancient retainer lives with a summer vacation feeling.

Utsuro, Oboro, Sagiri, and Zack have arrived at a building that was used to research something.

After things have calmed down, Keigo Magami has moved into the Otogi household. According to Keigo, he'll transform into Wolf if he sees any "crescent-shaped objects." Wolf gives in to his greed and will sleep and eat all day if he can, and even with his sexual desires… And so, Nico, Morihito, Kanshi, and Keigo remove all crescent-shaped objects to lessen the risk of transformation.

When he sees the shape of a crescent moon, he changes into a fierce werewolf with a ferocious amount of wild strength. He isolates and attacks Morihito. Meanwhile, Kanshi and Nico are surrounded by Wolf's "Dogs." They devise a simple plan where Nico searches for the witch who is targeting her, so Kanshi can attack the witch.

Kanshi saves Keigo from getting his sneakers stolen. The person who attacked him used a candy called "Drop," which has a stimulant effect that amplifies one's strength and desires. They learn that a person named "Wolf" was distributing this candy, and the ones using this candy to go berserk are called "Dogs." Later, a witch named Nemu Miyao appears before Nico and Morihito. 

Morihito is targeted by the very tropey Student Council. Ibara Ibu, the sexy, older sister Vice President who throws roses. Yuzuru Kenmochi, the other Vice President with a Kansai accent and closed eyes who definitely won't betray you. The European-style tsundere loli and Japanese-style horror cool-dere twin sister secretaries. The treasurer, who looks like an elementary school student, but is a genius hacker. The musclehead beast P.R. Officer. The psychotic knife-licking crazy General Affairs officer, and also in the same office, a mysterious robot-man. Lastly, the one who stands above them all, the Student Council President who won't take his hand off his hat, Tenryu Kiyomiya. What will Morihito do?

Nico and Morihito were at their classmate Kara Minami's house. Kara had invited them over so they could recover Kara's shredded up letter. Nico tells Kara that in order to use the spell "Witch Recovery," the parts of the item need to be somewhat gathered. Since there were other shredded pieces of paper in the pile, it would be difficult for the spell to succeed. The letter that Kara wanted to have Nico recover is a letter from her departed mother that her father had put in the shredder. 

Kanshi cried as he clung to Morihito. And that's because Kanshi immediately blew away his allowance and can't pay the monthly living expenses to the Otogi household. And so, Morihito hands him a flyer for a hero show for hire being held at Akebono Park. 

"I heard you can easily make money." With that reason alone, Nico and Kanshi started the "Kan and Nico Channel." Morihito gets irritated about how ignorant Nico and Kanshi are towards creating videos to post online, so he asks their hipster poser classmate, Keigo Magami, for help.

Nico is in panic mode because Morihito has gotten quite popular at school. Even Kanshi is able to recognize Nico's feelings for Morihito, but Morihito remains as clueless as ever. However, Nico hears about a famous Lovers' Tree at Mt. Futatsu, where her class will be going on a field trip soon. According to the rumor, if two people eat lunch together under that tree, they'll become a couple. Kanshi pressures Nico to tell Morihito about her feelings.

Nico and Morihito's homeroom teacher, Ms. Makuwa, is a secret manga otaku. Her favorite series is "Uron Mirage," also known as "U.M." One day, she hears that one of her students, Kukumi Ureshino, a.k.a. Kuku, has been posting U.M. fanart on her Chitter. It seems like she has 10k followers and some of her art has gone viral. And as Ms. Makuwa predicted… 

In order to protect Nico, the crow familiar Kanshi Kazamatsuri appears before Nico and Morihito. Kanshi is a tengu who lived in the mountain where Nico was undergoing training. Like Morihito, Ibuki asks Kanshi to protect Nico, but Kanshi sees the ogre Morihito as an enemy. Despite that, it looks like Kanshi will be moving in with Nico and Morihito?

When Nico and Morihito are relaxing at home, a package arrives from Nico's mother, Ibuki.

Nico and Morihito enroll in Asunaro Private High School. Nico is pushed to hide the fact that she's a witch. 

Nico returns home after practicing hard to become a witch and reunites with Morihito.