In another dimension, vampire and boss of the Demon World's Eastern District, Staz Charlie Blood lives as a normal otaku. Staz's second-in-command, Deku, informs him of their capture of a living human girl, Fuyumi Yanagi, and brings her over to Staz's apartment. Upon meeting Fuyumi, Staz becomes infatuated and engages her in an otaku discussion. Meanwhile, Deku and the other gang members get into a fight with a challenger to Staz's leadership who wields demon plants. Deku calls Staz for help, who aids them after suppressing his vampiric urges from Fuyumi.

Episode 2

Back Home, But Not Really

The Black Curtain exits inside Fuyumi's room and Staz immediately begins criticizing her plain lifestyle. Afterwards, Staz suggests that he enroll as a transfer student at Fuyumi's high school and they run into her upset father but Staz sprays him with his diluted saliva altering his behavior and explaining that it possesses the property of controlling humans. Later, Staz enters into a fit of excitement while marveling at the human world, and upon arriving at Fuyumi's school, sprays its entire population with his saliva thus allowing her to fit in as if she never left.

Episode 3

You Had It All Along

Wolf continues to expand his territory within the Demon World while Staz enlists Mamejirō along with Fuyumi to help track him down. Meanwhile, Bell still suspicious of Staz, continues to observe him. Staz and co. board a special demon carriage and end up meeting Wolf en route to another territorial battle. After a bit of casual rivalry, Staz tries to get Wolf to help him in obtaining the book which the latter deems too frivolous an exploit of his time. Seeing no other alternative, Staz proposes that they have a competition, with Wolf wagering to help Staz find the book should Staz win, and Staz wagering Fuyumi herself should Wolf win.

Episode 4

To Demon World Acropolis

Staz's reluctance to visit Braz in Acropolis enrages Wolf who forces him to finish that which he had started while also threatening Bell to use her Spatial Magic to take Staz to Acropolis. Wolf then kicks Staz into a newly opened portal where he ends up in Bell's bedroom. Here Bell once again tries testing Staz but he instead questions her true motive. Bell reveals that Staz's magic acts as though it leaks out of a seal prompting him to explain his history with Braz. Staz explains that when he was younger, Braz conducted numerous torturous experiments on him for the purpose of sealing away his magic, which Braz had managed by shooting a bullet directly into his heart thus creating a seal that only he can remove.

Episode 5

Unidentified Demon Object

Liz's zombies easily defeat Staz although he repeatedly challenges them with the same result. Meanwhile Franken deduces that Fuyumi's condition can be stabilized with a dose of Staz's blood. He further explains to Wolf that ghosts have the unique ability of becoming a single demon species by absorbing their magic; digressing that if Fuyumi absorbs all of Staz's magic she may be able to rival another demon.

Episode 6

That's Friendship

With his power now unlocked, Staz reluctantly leaves Acropolis to face Akim as per Braz's deal with him. Meanwhile, Wolf and Akim begin their battle with the latter specializing in spatial magic. Much to Wolf's shock, Akim reveals that he is merely demon phantom manipulating the dead pieces of a physical body via magic. Wolf then releases the magic stored in his pipe and enters into a full werewolf transformation. Meanwhile, Bell traps Franken in the grid room, forcing him to reveal everything about Akim's spatial magic.

Episode 7

Liz, For the First Time

Bell delivers Braz and co. back to Franken's examination room where Fuyumi and Mamejirō wait. As Braz meets Fuyumi for the first time, his initial interaction with her angers Staz, prompting him to reject Braz's help and uses his temporary method of restoring Fuyumi with his own blood. Afterwards the group heads back to the Third Eye Cafe after Braz makes a request to see Fuyumi's original body. Bell also reveals her suspicion of Braz to Staz and gives him a magical bell which would summon her when Fuyumi requires assistance.

Episode 8

Two is a Treasure

Liz arrives in Acropolis and is immediately confronted by Acropolis Policewoman, Constable Beros. Beros allows her re-entry into the district on the condition that she take her to Braz so that he can be arrested for illegally leaving Acropolis. Afterwards, Liz informs Staz that she had failed to locate Fuyumi using Braz's equipment while he is simultaneously approached by a member of the Southern District's tropical territory who takes him to the territory's snowman boss. Here Staz learns that the blond hairred-man called Knell Hydra lives in the inaccessible Dimensional Highway.

Episode 9

Sins of the Eye Glasses

Upon arriving at the Acropolis Palace, Braz has a flashback whereby he witnessed the death of his father, the previous king, at the hand of present Acropolis King: Wolf-Daddy. Meanwhile Knell and Fuyumi meet Bell and Staz at the Hydra Palace and realize that they know nothing about the Hydra siblings' mother: Neyn's intentions. Afterwards, Neyn has a rather heartfelt reunion with Fuyumi much to the latter's confusion while the Hydra butler explains that Braz and Neyn are acquaintances. Elsewhere, Wolf-Daddy commends Braz on his observational duties of Lower Demon World and in aiding the capture of Akim Papradon, but finds it suspicious that Akim shares the same appearance of his missing subordinate: Pantomime. Braz nonchalantly admits that he orchestrated the creation of Akim as a declaration of war against Wolf-Daddy's reign.

Episode 10

The Dark Hero Rises

Heads Hydra—master of the Hydra Territory confronts Staz. Meanwhile Deku, Yoshida and Mamejirō face the Tropical Territory who intend to conquer Staz's territory in his absence. Heads explains that after Neyn was formed, she along with himself and Fuyumi's father — Yanagi met to discuss their circumstances. Eventually Yanagi gave up Neyn to Heads in exchange that he raise Fuyumi as a normal human on his own. As Heads demands Staz's motive for resurrecting Fuyumi, the latter sincerely claims that he won't know his true feelings for her until she is resurrected. This prompts Heads to sever Neyn's eavesdrop on their interaction and tricks Staz into making a false pledge that would kill him should he go against Fuyumi's choices.