Due to very bizarre circumstances, the human boy, Suzuki Iruma, ends up in the netherworld. He is keeping the fact that he is human a secret and attends the Demon School Babyls. Because he is human, he cannot use magic so he had been using the Gluttonous Feeder Ring to get by in school. But then one day, the ring started to speak! Why, though? Iruma then meets the incarnation of the ring who calls themselves Alicred, AKA Ali-san.

The Magical Apparatus Battler is put on hiatus due to Kiriwo's absence. Ameri agrees to let them reinstate the Battler, but first, the three members must experience other Battlers. Asmodeus is sent to the New Magic Battler, Clara to the Game Battler, and Iruma joins the student council. Iruma now has to face the grueling training and schedule of the student council.

Someone had done something to change Ameri's personality! She's usually confident and stern, but now, she's now meek and dainty and the student council can't hide the fact that they're not sure how to handle the situation. While all this confusion is going on, Ronove Romiere, the president of the Disciplinary Battler comes to try to steal Ameri's position. He proposes a dissolution election against the student council. Who is behind the changes in Ameri? What will be the result of the election?

Ronove declares that he's going to take the position of student council president by holding a dissolution election. But due to a spell that someone has cast, Ameri is unable to be her usual confident self and is very meek. Iruma then tells her something she had told him in the past to try to give her confidence. What kind of speech will Ameri present while all of the attention is on.

After finishing his time at with the student council, Iruma finally goes back home. Sullivan is ecstatic that Iruma came home and throws him a welcome home party. He tells Iruma to invite Asmodeus and Clara and they all have a fun time. Sullivan ends up getting last in a dance competition they have and he then conducts a Dark Parade so he can make himself look cool too.

Ali-san forces Iruma to go through his evil cycle. His classmates are both in shock and admiration in how much more confident Iruma seems. Meanwhile, Iruma realizes how terrible of an environment the Misfit Class's classroom is, so he proposes something to Kalego. His proposal was to move the Misfit Class to the classroom with the utmost importance at Babyls, the Royal One! Despite the rather sudden and ridiculous request, Kalego agrees if Iruma is able to fulfill certain terms.

The Misfit Class must gather approved permission slips from all of the faculty members within three days to move to the Royal One. Iruma is currently going through is evil cycle and figures out a plan to have the rest of the Misfit Class members use their abilities to get approvals from the faculty members that might be less likely to say yes to their transfer. The first one to use their ability is Andro M. Jazz! Will Iruma's plan turn out to be a success?

With the help of the classmates and others, Iruma and the Misfit Class are able to get approved permission slips from all of the teachers and appear before Kalego. However, Kalego doesn't seem to want to stamp his own seal. He then points out something they missed in their agreement. Iruma and the Misfit Class were about to give up their transfer to the Royal One, when there's a knock on the faculty room door...

The students are about to welcome their version of summer vacation! The Misfit Class is super excited but then, they're reminded that if they don't do well on the end of terminus exams, they'll have to stay for supplementary classes during their break. To avoid that from happening, they all want to avoid failing. But Iruma is a human and has very little knowledge concerning netherworld wisdom. To avoid failing, Iruma works with Asmodeus and Clara to study!

The instructor for the study of imaginary beasts, Balam Shichiro, can't help but touch any living creature he comes in contact with. Because he looks rather terrifying, the students are generally pretty scared of him. During class, Balam notices that Iruma doesn't have wings on his back. If it's found out that Iruma is a human in the netherworld, only trouble awaits. But despite all of this, Iruma says the most surprising thing to Balam...

The end-of-terminus exams are finally upon them! Will Iruma and the rest of the Misfit Class be able to avoid failing and having to take supplementary classes? Meanwhile, Ameri is excited for her usual reading session with Iruma when she's suddenly visited by Clara. Clara then drags Ameri off to meet with Elizabetta and Keroli and they have some girls' time. They start talking about relationships and things start to oddly heat up...

Kalego is forced to go visit all of the homes of the Misfit Class due to Sullivan's orders. He wants to get this over with as soon as possible but considering how unique all of his students and their families are, he has trouble finishing this quickly. He finally gets to Iruma's home, which is Sullivan's mansion, and he seems to be on guard. It appears that there's somewhere here who he's known since high school, and...

The Misfit Class finally gets to go to Walter Park on their vacation. Kalego, Balam, and Opera go as their bodyguards and chaperones while Ameri thinks Iruma is asking her on a date and also joins in. They split up into three teams and see which team can have the most fun at the amusement park!

Iruma and company continue having fun at Walter Park. In the middle of the fun, they end up finding the park staff who help them with various things. However, Iruma leaves with Ronove and ends up getting lost! Will he be able to find his friends again?

The Six Finger Group attacks Walter Park and mysteriously appear three demonic monsters that attack Iruma and his friends. Meanwhile, an escape plan for the underground prisoners in the park goes forward.

Iruma and company are separated while Walter Park is attacked. Iruma enlists the help of his friends to save a group of children. Jazz outlines a plan to fight the Bull of the Mountains. Meanwhile, Panther Rat attacks Ameri's group.

Asmodeus and Sabnock contradicted Balam's directions and attacked the Crimson Dragon. Now they need to find a way to escape the clutches of the dragon. As for that, Balam needs to take responsibility for the students!

The Crimson Dragon is about to destroy the shelter for visitors to Walter Park. Everything seems lost when Ronove shows up to save the day and distract the monster. However, he is now in danger and Iruma runs to save him!

Iruma and Alice will spend the night at the Valac house to avoid the spotlight after what happened at Walter Park. But when they get there, they find an environment a little different from what they expected. Now, everyone goes out together to the "supermarket" in search of food!

Ameri carefully plans out her date with Iruma by going through guidebooks and her favorite manga, "First Love Memories." They are finally going on their date that she'd been dreaming of! They end up going to Aqua Case, an aquarium that is also a waterpark! Ameri tries to make various exciting things happen on the date with her secret plan, but everything she tries doesn't seem to be backfiring, and...

The end of terminus enters its final days. Iruma safely finishes his homework and is invited by Sullivan to go to Magical Street along with Opera. They browse around picking up things Iruma will need for his new school term. Iruma happens to overhear some demons talking and then asks Sullivan about the Demon King, since he is one of the most qualified individuals to become Demon King. What exactly does it mean to be the Demon King, the most powerful being in the netherworld?