After being sold to a demon who wants him as his grandson, Iruma Suzuki must conceal his human identity and enroll at the fiendish Babirus Academy.
It's Iruma's first day of classes and his plan to keep a low profile quickly flops. He must successfully summon a magical familiar or face expulsion.
Iruma meets his weird classmate Clara but learns something sad about her. Later, he deals with some pranksters by revealing a surprising ability.
After being placed in a class of "abnormal" students, Iruma has a chance to show off his dodging ability to them. But one classmate isn't impressed.
Sabnock uses his burning ambition and transmutation abilities to battle the King of Kanakiri. Meanwhile, Iruma races into the valley on a giant bird.
The Ring of Gluttony's powers make Iruma even more worried about blending in, but his peers happily compete for attention in a magical botany class.
The student council president reconsiders getting Iruma expelled after realizing that he can read her beloved -- but forbidden -- human comic book.
Clara doesn't like Iruma's new female friend and Sabnock suggests she use her own sexiness to lure him away. But she has no idea how that would work.
Iruma has a week to prepare for his Bet rank test, but it might not be enough time given the demonic competition so Opera makes special preparations.
The day of the rank-advancement test has finally arrived, but Iruma and Asmodeus are shocked to see they've been placed on opposing teams.
A new teacher specializing in magical familiars joins the school. Later, Iruma learns about "battlers," student groups formed around shared interests.
The upper classes begin the Rookie Hunt, an all-out fight to recruit freshmen. Later, Iruma's ring sends him crashing into an expert on magical items.
While responding to texts from the student council president, Iruma runs into the tool specialist again. Sullivan heads out to an important meeting.
The students prepare to showcase their activities to their families at the Battler Party, but the school is alarmed to learn Sullivan may not show up.
As the school gears up for the party, some shadowy figures continue their devious plot. Iruma searches for Kiriwo, who seems to have gone missing.
Iruma agrees to help Kiriwo achieve his dream by winning the Grand Prize. After he checks out the competition, he notices an important item is gone.
Frightening magical barriers appear and seal the school off from the world. As Naberius tries to keep order, Iruma heads to the source of the problem.
With little time before the party, Iruma makes it to Kiriwo. But something seems different about the upperclassman, who shares a tragic backstory.
Iruma and his proud grandpa put on a firework show that more than dazzles its viewers. Later, he meets his classmates' quirky family members.
The winning battlers are announced at the party finale. Later, Iruma is approached by Ameri’s father, Henri Azazel, who has growing suspicions.
Iruma learns about demoness diva Kuromu and heads to one of her concerts. Meanwhile, Kuromu ponders her own feelings about becoming a celebrity.
Kuromu collapses from overheat, jeopardizing the biggest concert of her career. But the show must go on, and Iruma decides to do whatever it takes.
Iruma has a wonderful day at school surrounded by friends and finally feels like he belongs there. But he wonders what this means for his future.
Iruma starts another day at Babirus Academy. On his way to lunch, he panics when a familiar entity suddenly emerges from his ring and talks to him.
Ameri tells Iruma that he and the members of his Battler must split up and undergo training in other Battlers. She places him on the student council.
As the student council members struggle to hide their discomfort with Ameri's new demeanor, they encounter the head of the public morals Battler.
Iruma tries to encourage an unusually unconfident Ameri. On the day of the snap election, Ronove makes a flamboyant appeal to the student body.
At his grandpa’s suggestion, Iruma invites Asmodeus and Clara to a party at his house. After a meal, everyone plays a competitive dance video game.
Iruma awakes one morning in an evil mood, making him much cooler in the eyes of his schoolmates. He demands a nicer classroom for the Misfit Class.
Using every demonic trick at their disposal, the students of the Misfit Class try to obtain signed permission from every teacher within three days.
Just one obstacle stands between the Misfit Class and its new classroom: Naberius Kalego, who points out an unfortunate omission in Iruma's plan.
Distraught that he doesn't understand any of his academic material, Iruma begins studying for his end-of-term exams alongside Asmodeus and Clara.
The students take a class with Balam, a creepy teacher who inspires frightening rumors. Mid-lecture, he notices that Iruma doesn't have demon wings.
The Misfit Class learns the results of the end-of-term exams. As Ameri prepares for a reading session, Clara appears and drags her to a girls' party.
At Sullivan’s behest, Kalego reluctantly visits the homes of the Misfit Class students. But meeting their families doesn't go as smoothly as he hopes.
During a visit to a popular demon amusement park, Iruma and his classmates split into groups and compete to see who can have the most fun.
The girls in Opera's group try on cute clothes while Kalego's students try to win prizes at a shooting gallery. Iruma gets lost down a creepy alley.
The Six Fingers unleash three massive, magical monsters upon Walter Park. Jazz and his friends try to fight one, despite their lack of attack spells.
Asmodeus and Balam's group decides to help Iruma save the rest of the children. Meanwhile, Opera and Ameri take on one of the three giant beasts.
Despite their bickering, Sabnock and Asmodeus fight the Carmine Dragon together. When Asmodeus is distracted, the dragon unleashes a powerful blast.
Leaping in front of the magical monstrosity, Iruma uses his ring to call forth some assistance. Kiriwo escapes from prison with the Six Fingers' help.
Clara's family exuberantly welcomes Iruma and Asmodeus to its home, which lies within a bizarre forest. Later, they all go out to gather food.
After creating an elaborate date plan inspired by her favorite romantic comic book, Ameri nervously waits for Iruma at an aquatic theme park.
Sullivan takes Iruma to a bustling shopping district to get ready for the next school term. Later, Iruma asks him a question about the Demon King.
Iruma and his friends in the Misfit Class learn they must attain a certain rank before becoming second-year students — or lose their cushy classroom.
Lead decides to ask Robin to tutor him while Iruma sticks with Bachiko. Later, the classmates commiserate with each other over their harsh training.
Bachiko takes Iruma to the Magical Apparatus Battler so he can craft a bow of his own, but none of his creations meet her strict standards.
The school kicks off the four-day Harvest Festival, where students are tested on their ability to gather ingredients in a dangerous jungle.
The Dorodoro Brothers make a wager with Asmodeus and Sabnock. Camui and Keroli tame some beasts, while Jazz and Allocer earn points through trickery.
Iruma and Lead leisurely enjoy a meal made from what they've gathered. As they reminisce about a mixer party, a costumed figure approaches them.
Clara pulls Iruma into a realm of fun and games. As night falls and many students drop out of the event, Konatsu's group enters a mysterious castle.
Agares tells Konatsu's group about his friendship with Garp. The teachers have a feast and comment on their students' Harvest Festival performance.
Hoping to get their mentor back, the Dorodoro Brothers goad Asmodeus and Sabnock into accepting their challenge to defeat a monstrous bird.
Still with zero points on the second day of the Harvest Festival, Iruma and Lead search for a valuable leaf but get captured by Keroli's loyal beasts.
Allocer tells Ameri that someone is targeting the Misfit Class. Meanwhile, Iruma and Lead split up and follow the clues hidden in the beasts' song.
While searching for a way out of the underground labyrinth with Naphula, Iruma begins seeing terrifying illusions conjured by Orobas's magic.
Kalego announces the current scores, along with a message for the one student with no points: Iruma, who tries to find a way out of the pit.
After telling Iruma that Elizabetta took the Vase of Endings from him, Lead uses his ability to locate her and overhears Keroli planning something.
Agares and his friends protect the castle from Keroli's forces. Iruma's group learns that Orobas has been targeting students in the Misfit Class.
After Asmodeus gets disqualified for attacking Orobas, Iruma and his friends move to retrieve the vase but notice that Orobas has disappeared.
As the deadline approaches on the final day of the Harvest Festival, Iruma and his friends try to figure out how to make the Legend Leaf bloom.
The students marvel at the Legend Leaf's beautiful parting gift. At the awards ceremony, they listen as the faculty announces their new ranks.
During a lively after-party, the teachers chat about their early days as instructors. Kalego commends Robin for how he dealt with Ocho.
Iruma goes to Lead's house to play a video game, but Lead's older sister angrily interrupts their fun. Ameri and Iruma attempt to bake some cookies.
As thanks for training Iruma, Sullivan treats Bachiko to a meal at his home and tells her a secret. Later, Iruma and Clara visit Asmodeus's mansion.