The Kaiju No. 8 machine keeps running: staff revealed that a new anime short will run for four episodes starting September 5, 2026, with visuals tied to Kafka's birthday and a Defense Force Boot Camp event in Tachikawa. If the news pulled you back in, here's the full where-to-watch and where-it-ranks rundown of Production I.G's monster-hunting hit.
Quick answer
Kaiju No. 8 (Kaijuu 8-gou) is a monster-defense action series from Production I.G and Studio Khara, adapted from Naoya Matsumoto's Shonen Jump+ manga. Season 1 aired in 2024 (12 episodes) and Season 2 followed in 2025 (11 episodes), both streaming on Crunchyroll worldwide. According to SenpaiRanks, Kaiju No. 8 holds an adjusted score of 7.41 across our dual-axis board. A new four-episode anime short begins September 5, 2026.
The setup
Thirty-two-year-old Kafka Hibino cleans up kaiju corpses for a living — the unglamorous end of Japan's monster problem. He always wanted to join the elite Defense Force, but he aged out of the dream. Then a small kaiju crawls into him and turns him into one: a humanoid monster the Force designates "Kaiju No. 8." Now he's chasing the career he gave up while hiding the fact that he's exactly the kind of thing they're sworn to kill. It's a workplace underdog story wearing a monster-of-the-week skin, and that combination is why it broke out.
Where to watch
Both seasons stream on Crunchyroll (sub and dub) worldwide — that's the single cleanest home for the series. Season 1 covers Kafka's recruitment and the Tachikawa base arc; Season 2 (2025) pushes into the larger Defense Force conflict. The new four-episode short starting September 5 is a between-seasons extra, not the next main season. Here's the series trailer:
Is it good?
Yes, with a caveat about expectations. Per SenpaiRanks, Kaiju No. 8 tracks at an adjusted 7.41 — comfortably in the well-liked tier, powered by some of the best sakuga in a modern battle-shonen thanks to Production I.G. The caveat: it's a crowd-pleaser, not a genre reinvention — the structure is familiar, and how much you love it depends on whether Kafka's older-underdog angle lands for you. That's the split our two-axis board is built to expose — is it broadly liked or does it hold up against the heavyweights? Rate it on the card above and drop your own read into the ranking; the fun argument here is whether the animation or the premise is doing the heavy lifting.
How it ranks against the shelf
Kaiju No. 8 sits in the modern action-shonen pack just below the very top. On our board it trails Jujutsu Kaisen (adjusted 8.46) but reads as a cleaner binge than the sprawling final act of Bleach: Thousand-Year Blood War. For the full airing picture, our best summer 2026 anime hub ranks everything current, and the where to watch anime in 2026 guide maps the platforms.
Frequently asked questions
Q: Where can I watch Kaiju No. 8?
A: Both seasons stream on Crunchyroll worldwide, in subbed and dubbed versions. A new four-episode short begins September 5, 2026.
Q: Is Kaiju No. 8 good?
A: Yes — it's a well-animated action-shonen with a strong underdog hook. SenpaiRanks tracks it at an adjusted 7.41, in the well-liked tier.
Q: How many seasons of Kaiju No. 8 are there?
A: Two — Season 1 (2024, 12 episodes) and Season 2 (2025, 11 episodes), plus a new four-episode short from September 2026.
Q: Who makes the Kaiju No. 8 anime?
A: Production I.G and Studio Khara, adapting Naoya Matsumoto's Shonen Jump+ manga.
Q: What is the new Kaiju No. 8 short?
A: A four-episode anime short starting September 5, 2026, tied to a Kafka birthday and Defense Force Boot Camp promotion — a between-seasons extra, not Season 3.