It is really happening. After three seasons of lies, spotlights, and heartbreak, Oshi no Ko just dropped the first teaser visual and trailer for its fourth and final season — and fans are already crying. The reveal happened at the Ichigo Production Fan Thanksgiving 2026 event on August 16, and within hours the teaser was everywhere. If you thought Season 3 hurt, wait until you see what Doga Kobo has planned for the grand finale.
Oshi no Ko Season 4 was previously confirmed as the final season of the TV anime adaptation, based on the manga written by Aka Akasaka and illustrated by Mengo Yokoyari. The first season premiered in March 2023 and swept the Spring 2023 seasonal rankings, the second season was voted the most anticipated anime of Summer 2024, and the third season bagged multiple awards including Winter 2026 Anime of the Season. All three seasons were animated by Doga Kobo, and the studio returns to close out the story of Aquamarine Hoshino and Ruby Hoshino.
The Teaser Visual and Trailer Are Here
The newly revealed teaser visual sets a somber, dramatic tone that longtime manga readers will instantly recognize. It hints at the final arc of the story, where every lie Aqua and Ruby told finally catches up with them. The teaser trailer, released alongside the visual, gives a first glimpse of the closing chapter — and even without spoiling a single frame, the mood alone tells you this season will not hold back.
The story momentum leading into the finale is explosive: it has been six months since POP IN 2 was released, B-Komachi is about to get their major break thanks to MEM-cho hard work, Aqua has grown into a multi-talented entertainer, and Akane Kurokawa career as a talented actress is going smoothly. But Kana Arima has lost the cheerfulness she once had, and Ruby keeps rising in the entertainment world to track down the truth behind the deaths of Ai Hoshino and Goro Amemiya. That setup is the powder keg the final season will ignite.
The Cast Returns for One Last Act
The core voice cast is back to finish what they started:
- Takeo Otsuka as Aquamarine Hoshino
- Yurie Igoma as Ruby Hoshino
- Megumi Han as Kana Arima
- Manaka Iwami as Akane Kurokawa
- Rumi Okubo as Mem-cho
- Lynn as Miyako Saito
- Rie Takahashi as Ai Hoshino
Takeo Otsuka and Yurie Igoma carry the emotional core of this final arc as the Hoshino twins, while Megumi Han and Manaka Iwami deliver the Kana versus Akane dynamic that has divided the fandom for years. And Rie Takahashi presence as Ai Hoshino — even in memory and flashback — still looms over every scene.
Why This Final Season Matters So Much
Oshi no Ko was never just an idol anime. Aka Akasaka, the mind behind Kaguya-sama Love is War, teamed up with Mengo Yokoyari, the artist behind Scum Wish, to create a story about the dark side of the entertainment industry — exploitation, lies, grief, revenge, and the price of stardom. It became one of the defining anime of the decade, sparking real conversations about idol culture in Japan and beyond.
The manga ending was one of the most debated finales in recent memory. Some fans loved it, others felt betrayed. That controversy is exactly why this final season is appointment viewing. Anime-only viewers are about to experience the ending everyone argued about — and Doga Kobo has a chance to elevate it with the kind of direction and pacing only animation can deliver. Remember how the 90-minute premiere of Season 1 broke the internet? Expect that energy again, but heavier.
There is also the question of how faithful the adaptation will be. Doga Kobo has stayed close to the source material across three seasons while polishing key moments with anime-original flourishes. For the finale, every cut, every pause, every close-up of Aqua eyes or Ruby smile will matter. The teaser already suggests the studio understands the assignment.
What to Watch Before the Finale Airs
If you need a refresher, rewatch the Season 3 climax and pay attention to Ruby arc — her transformation is the engine of the final season. Revisit the Tokyo Blade arc from Season 2 for Akane and Kana character foundations. And if you really want to feel something, rewatch Episode 1 of Season 1. You know the one. The Ai episode. It still hurts, and it will hurt even more once the finale gives it full context.
Fans of dramatic seasonal anime should also check out our coverage of Jujutsu Kaisen Season 4 teaser theory, the Sakamoto Days Season 2 trailer breakdown, and how Ascendance of a Bookworm became the number 1 anime of Summer 2026.
What Do You Think?
Are you ready for the end of Aqua and Ruby story, or are you still not over what happened to Ai? Team Kana or Team Akane — one last time, no take-backs? And the big one: do you think Doga Kobo will stick to Aka Akasaka manga ending, or will the anime go for an original finale? Drop your theories and your tears in the comments — this is the final season, so every opinion counts.
