The official website for the anime adaptation of Mairimashita! Iruma-kun has released a new promotional video for the fourth season, offering the first detailed look at the story’s next major arc. The trailer, which debuted on June 13, 2026, showcases new characters and hints at the escalating challenges awaiting protagonist Iruma Suzuki. The season itself premiered on April 4, 2026, and this latest footage signals a significant narrative shift as the series adapts some of the most beloved material from Osamu Nishi’s original manga.
What the New Trailer Reveals About Season 4’s Upcoming Arc
The newly released trailer focuses squarely on the next story arc, moving beyond the introductory episodes of the season. While the first few episodes of Season 4 served to re-establish the world of Babyls School for Demons and Iruma’s precarious position within it, the new trailer indicates a ramp-up in both stakes and scope. It provides glimpses of several new characters, whose designs and brief interactions suggest they will play pivotal roles in the coming conflict. The promotional video is accompanied by a fresh key visual, which features Iruma alongside a host of returning and new characters against a backdrop that hints at a more dangerous and mysterious setting within the demon realm. For fans, this visual and the footage confirm that the production studio, CloverWorks, is maintaining the vibrant art style and dynamic animation that have become hallmarks of the series.
What is the next major story arc in Mairimashita! Iruma-kun Season 4? The trailer strongly indicates that the anime is moving into the “Heartbreaker” arc, a fan-favorite segment of the manga that tests the bonds of the student body and Iruma’s own growth. In this arc, students face a series of increasingly difficult trials that push them to their limits, revealing hidden abilities and deepening character relationships. The new characters glimpsed in the trailer are likely key figures from other classes or influential figures within the school, setting the stage for the competitive and emotionally charged challenges that define the Heartbreaker storyline.
The Heart of the Story: Iruma Suzuki’s Ongoing Struggle
For those unfamiliar with the series, Mairimashita! Iruma-kun follows the journey of Iruma Suzuki, a kind-hearted but otherwise ordinary 14-year-old boy. Sold by his irresponsible parents to a demon, he is instead adopted by Sullivan, one of the most powerful demons in the netherworld and the chairman of Babyls School for Demons. Sullivan enrolls Iruma in the school, forcing him to conceal his human identity to survive. What begins as a desperate attempt to avoid being discovered and devoured evolves into a story about friendship, self-discovery, and defying expectations. Iruma’s unwavering kindness and surprising resourcefulness slowly earn him the respect and loyalty of his demon classmates, making him an unlikely but beloved figure in the demon realm. The series has gained a dedicated global audience for its wholesome humor, compelling character arcs, and intricate world-building.
The fourth season continues this core premise, but the trailer suggests that the stakes are higher than ever. The new arc appears to force Iruma to move beyond passive survival and take a more active role in shaping his destiny and the fate of those around him. The challenges depicted in the footage are not just academic; they appear to be life-threatening, testing the very survival instincts that have kept him hidden for so long. This progression marks a natural maturation of the series, moving from lighthearted school comedy into a more balanced blend of high-stakes adventure and emotional drama.
New Characters and Their Potential Impact
One of the most exciting elements of any new season of Mairimashita! Iruma-kun is the introduction of new characters who enrich the already expansive cast. The trailer for Season 4’s next arc is no exception. While specific details about their roles remain under wraps, the visual cues from the footage provide some strong indications. One character, with a stern demeanor and regal bearing, is likely a member of the student council or a high-ranking demon from a prominent family, potentially serving as a rival or an unexpected ally. Another figure, shrouded in mystery and appearing in isolated shots, could be the primary antagonist of this arc, whose motives are not yet clear. These new additions are not merely filler; in the manga, the Heartbreaker arc introduces characters whose histories and abilities become crucial to the overarching plot, setting up developments that resonate through later storylines. Their introduction in this trailer is a clear signal to long-time readers that the anime is faithfully adapting a critical turning point in the narrative.
Visual Presentation and Production Quality
The new key visual released alongside the trailer is a striking piece of promotional art. It places Iruma at the center, surrounded by the core members of the Misfit Class, but the background is notably darker and more foreboding than previous season visuals. This artistic choice visually communicates the tonal shift of the upcoming episodes. The animation in the trailer itself is fluid and expressive, particularly during the brief action sequences, which feature the vibrant magical effects the series is known for. CloverWorks, the studio behind critically acclaimed works like The Promised Neverland (season 1) and Bocchi the Rock!, continues to demonstrate a high level of commitment to the property. The character designs remain faithful to Nishi’s manga, with a clean and appealing aesthetic that makes the demons both menacing and endearing. For fans who have followed the anime since its debut in 2019, the visual consistency and quality in Season 4 are a clear sign that the production team is dedicated to delivering a premium adaptation for the series’ most important storylines yet.
Context and History of the Fourth Season
The announcement of a fourth season was met with widespread celebration from the fanbase, as the series had consistently grown in popularity with each installment. The first season aired in 2019, immediately capturing viewers with its unique blend of a “fish out of water” premise and a surprisingly heartwarming demon world. The second season, which aired in 2021, deepened the character development and introduced the pivotal “Walter Park” arc, a fan-favorite storyline that raised the emotional and action-oriented stakes. Season 3, which aired in 2022 and concluded in early 2023, adapted the “Devil Harvest Festival” and “Music Festival” arcs, solidifying the anime’s reputation for masterfully adapting extended, multi-character storylines. Season 4, which began in April 2026, was always expected to tackle the material that follows those festivals, and the new trailer confirms that it is diving headfirst into the intense and beloved “Heartbreaker” arc. This consistent, high-quality adaptation schedule is a testament to the manga’s strong source material and the anime’s dedicated production committee, which sees the series as a flagship title.
What to Expect in the Coming Episodes
Based on the trailer and the source material, viewers can anticipate a significant departure from the episodic, school-life structure of the early episodes. The Heartbreaker arc is known for its prolonged tension, intricate strategy, and emotional gut-punches. Characters who have been supporting players for seasons will be given moments to shine, revealing hidden depths and motivations. Iruma himself will be forced to rely on his wits and the trust he has built with his friends, moving away from the luck-based survival of earlier seasons. The trailer hints at several dramatic confrontations and a few tear-jerking revelations. For new viewers who have just started Season 4, this arc represents the point where the series truly proves its staying power as a major player in the modern shonen landscape. For dedicated fans, it is the payoff of years of character investment, brought to life with the high production values the story deserves. The next batch of episodes promises to be the most intense and rewarding segment of the anime to date.
