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Kaiju no. 8 has already become one of the best modern shonen adaptations. The anime, based on Naoya Matsumoto’s manga, is a blend of military action, kaiji battles, and well-developed characters. The first season of the anime aired in Spring 2024, adapting Chapters 1 to 39 of the manga and featuring the metamorphosis of Kafka Hibino into Kaiju No. 8, as well as the first battles of the Defense Force. Season 2 started in July 2025 and put the Kaiju Weapon Arc and Compatible User Arc on screen, adapting Chapters 40–68. As the manga is officially ending in July 2025 with Chapter 129, the question is simply: Does Kaiju no. 8 anime deserve a Season 3?
Yes, Kaiju no. 8 anime deserves a Season 3. The manga has more than 60 chapters that are yet to be adapted, and the success of the anime in Japan and abroad justifies additional production. Seasons 1 and 2 established a solid base with a pacing of the arcs initially. Given the franchise momentum, the planned source material, and the well-laid storylines left, it is fully possible to have at least one more (possibly two) seasons of anime to complete the adaptation.
The anime has now adapted nearly half of the manga after Season 2. However, chapters 69-129 still remain. They contain such important storylines as the Cataclysms Arc, the Second Wave Arc, and the Final Battle Arc. Such arcs are some of the most dramatic and climactic of the manga, i.e., they are too important to be hurried. It is probably not feasible to squeeze these into one season, as Production I.G. has so far adapted them. Instead, the studio might opt to create both a Season 3 and a Season 4, so that the story retains its effect.
The creative team of the anime also makes the continuation argument stronger. Shigeyuki Miya, Tomomi Kamiya, series composer Ichirou Ookouchi, and character designer Tetsuya Nishio have created a stable style and tone that fans enjoy. The score by composer Yuta Bandoh has also made kaiju battles more intense. The voice cast, including the Japanese actor playing the role of Kafka Hibino, is much praised, and the role of Mina Ashiro and Kikoru Shinomiya is not an exception. This cast and crew would have no significant restructuring to avoid, and a Season 3 would be the logical next step.
Kaiju no. 8 has also been among the most viewed new anime shows globally, and Crunchyroll has acquired simulcast rights, with a large viewership outside Japan. This global triumph is essential as it provides another dimension of financial and cultural assistance to further seasons. As the manga comes to an end, the anime receives the rare chance of a full adaptation, which the fans of long-form shonen series treasure.
Kaiju no. 8 and the Road Ahead
The rest of the manga material suffices to fill additional seasons. The Cataclysms Arc, along with the build-up of the Second Wave, in chapters 69-95, would make a whole season on its own. The last chapters, 96–129, could then be turned into a fourth season, so that the end is not rushed and the stakes of the decisive battles are fulfilled. This would allow the anime to continue the slow progress it has already attained.
It should also be mentioned that Kaiju no. 8 manga is now finished with 129 chapters, which gives Production I.G. a clear goal to aim at. This adaptation lacks the filler-arc risks or manga-original endings that other ongoing manga adaptations do, and its source material is stable. The season 3 green light is logical and expected, given that the anime is already halfway through the story and all the production elements are still in place.
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Kaiju no. 8 definitely deserves a Season 3. The length of the manga, the speed of the previous adaptations, the already established production team, and the positive international reception of the anime all indicate that a continuation is not only possible but that it is inevitable. Regardless of whether the story is tied up in a single extra season or expanded to two, fans can be certain that Kaiji no. 8 will keep rolling to the end.
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