Last updated: 1 November 2026
Oshi no Ko is a drama-mystery anime by Doga Kobo about twins reborn as the children of idol Ai Hoshino. It has 35 episodes across three seasons (2023–2026), with a fourth and final season announced. Behind the idol sparkle, it is a story about lies, fame and one son's hunt for the person behind his mother's murder.
About Oshi no Ko
A doctor is reborn as the child of his favourite idol, Ai Hoshino, and grows up inside Japan's entertainment industry. Dr Gorou Amamiya, a huge fan of the idol group B-Komachi, is murdered just before Ai gives birth in secret, and wakes up as her son, Aquamarine "Aqua" Hoshino, with all his memories intact. His twin sister Ruby is a reborn fan too. When Ai is murdered by a stalker years later, Aqua swears revenge and enters show business to hunt the person who leaked her secret. Behind the glitter, the series explores fame, lies and the dark side of show business: child actors, reality TV, online hate and an industry that sells love it cannot feel. Animated by Doga Kobo, it opened in 2023 with a famous 90-minute first episode and YOASOBI's hit song "Idol", and it now runs to 35 episodes across three seasons, with a final season announced. It is a drama full of twists that keeps you guessing.
Oshi no Ko is a TV anime from 2023, first released in Spring 2023. It belongs to the Drama and Mystery genres. The summary above is written by the AnimeYug team in our own words.
Official Trailer
Story & Plot
Gorou Amamiya is a country doctor and devoted fan of Ai Hoshino, the shining centre of idol group B-Komachi. When Ai arrives at his hospital secretly pregnant with twins, Gorou promises to deliver her babies safely, but a stalker murders him on the night of the birth. He wakes up as Ai's son Aqua, keeping every memory, while his twin Ruby is secretly the rebirth of his patient Sarina, a girl who died dreaming of becoming an idol. For a few happy years the twins grow up in the glow of their mother's fame, until the same darkness returns and Ai is killed in front of Aqua.
As teenagers, the twins enter the industry from opposite sides. Ruby rebuilds B-Komachi with former child star Kana Arima and streamer MEM-cho, chasing the stage her mother loved. Aqua acts only to get closer to the people who knew Ai, following every clue toward the man who betrayed her. Stage plays, scandals and a film about Ai's life push both twins toward the truth, and test how much of themselves they will destroy to reach it.
Story Arcs & Episode Guide
The Oshi no Ko anime is split into story sagas. Here is every saga in order, with its episodes and years.
| Arc | Episodes | Years | About |
|---|---|---|---|
| Season 1 | 1–11 | 2023 | Ai's secret, the twins' childhood and the start of Aqua's revenge, opening with a 90-minute premiere |
| Season 2 | 12–24 | 2024 | The 2.5D stage play Tokyo Blade tests Aqua, Kana and Akane as actors |
| Season 3 | 25–35 | 2026 | Ruby's rise, a scandal that shakes B-Komachi and the launch of the film about Ai |
Why Watch Oshi no Ko
- A 90-minute premiere episode that plays like a film and lands one of anime's most shocking twists.
- A rare inside look at idols, acting, reality TV and online fame, and what each one costs.
- YOASOBI's opening 'Idol' became a worldwide hit, topping global charts in 2023.
- Two leads with opposite dreams: Ruby chases the stage while Aqua hunts their mother's killer.
- The manga is complete in 16 volumes, and a final anime season has been announced to finish the story.
Who Is It For?
Oshi no Ko is made for older teens and adults. It looks bright and cute, but it deals with murder, stalking, online hate, exploitation in show business and other heavy themes, so it is not a show for young children.
Main Characters
View all characters →
Voice Actors
The Japanese voices behind the main characters of Oshi no Ko.
- Ai HoshinoLegendary idol of B-Komachi; Aqua and Ruby's motherJapanese voiceRie Takahashi
- Aqua HoshinoAi's son; actor investigating her murderJapanese voiceTakeo Ōtsuka
- Ruby HoshinoAi's daughter; idol singer of the new B-KomachiJapanese voiceYurie Igoma
- Kana ArimaFormer child star; centre of the new B-KomachiJapanese voiceMegumi Han
- Akane KurokawaGifted stage actress who can copy anyone she studiesJapanese voiceManaka Iwami
- MEM-choPopular streamer who joins the new B-KomachiJapanese voiceRumi Okubo
- Miyako SaitoManager at Strawberry Productions who raises the twinsJapanese voiceLynn
- Ichigo SaitoFounder of Strawberry Productions; Ai's former managerJapanese voiceHisao Egawa
- Taishi GotandaFilm director who mentors AquaJapanese voiceYasuyuki Kase
- PieyonMasked fitness influencer who trains B-KomachiJapanese voiceTaishi Murata
- Frill ShiranuiFamous young actress and modelJapanese voiceAsami Seto
- Minami KotobukiGravure model and Ruby's school friendJapanese voiceHina Yōmiya
- Hikaru KamikiFormer child actor connected to Ai's pastJapanese voiceMamoru Miyano
- Taiki HimekawaStar actor who shares a surprising link with AquaJapanese voiceKoki Uchiyama
- TsukuyomiMysterious girl who knows the twins' secretJapanese voiceHina Kino
Staff & Production
- Original Creator
- Aka Akasaka (story) and Mengo Yokoyari (art)
- Animation Studio
- Doga Kobo
- Series Director
- Daisuke Hiramaki
- Series Composition
- Jin Tanaka
- Music
- Takurō Iga
Manga & Source Material
Oshi no Ko began as a manga written by Aka Akasaka, the creator of Kaguya-sama: Love Is War, with art by Mengo Yokoyari. The anime follows the manga closely, and by the end of Season 3 it had adapted up to chapter 127.
- Written by Aka Akasaka and illustrated by Mengo Yokoyari
- Serialised in Shueisha's Weekly Young Jump from 23 April 2020 to 14 November 2024
- 166 chapters collected in 16 volumes. The manga is complete
- More than 25 million copies in circulation by December 2025
- Aka Akasaka also created Kaguya-sama: Love Is War; Mengo Yokoyari created Scum's Wish
Music
Each season has one opening and one ending theme, and music drives the whole series, the in-story idol group B-Komachi also performs original songs such as 'POP IN 2', 'STAR☆T☆RAIN' and 'B no Revenge'.
Opening Themes
- “Idol”by YOASOBISeason 1 opening (2023): a global hit written from Ai Hoshino's point of view
- “Fatal”by GEMNSeason 2 opening (2024), by the unit of Kento Nakajima and Tatsuya Kitani
- “TEST ME”by CHANMINACurrentSeason 3 opening (2026)
Ending Themes
- “Mephisto”by Queen BeeSeason 1 ending (2023)
- “Burning”by HitsujibungakuSeason 2 ending (2024)
- “Serenade”by natoriCurrentSeason 3 ending (2026)
Series Timeline
- 2020
Aka Akasaka and Mengo Yokoyari's Oshi no Ko manga begins in Weekly Young Jump on 23 April.
- 2022
The TV anime adaptation is announced in June.
- 2023
Season 1 premieres on 12 April with a 90-minute first episode, and YOASOBI's 'Idol' becomes a worldwide hit.
- 2024
Season 2 airs from July to October, adapting the Tokyo Blade stage play arc. The manga ends on 14 November.
- 2026
Season 3 airs from 14 January to 25 March, and a fourth and final season is announced after the finale.
Quick Answers
Is Oshi no Ko finished?
Oshi no Ko has not been announced as finished, so more of the story may still come in the future.
What genre is Oshi no Ko?
Oshi no Ko is a Drama and Mystery anime. You can browse more titles like it on our Drama anime page.
When did Oshi no Ko release?
Oshi no Ko first released in Spring 2023. It is a TV series.
How many episodes does Oshi no Ko have?
Oshi no Ko has 35 episodes so far: 11 in Season 1 (2023), 13 in Season 2 (2024) and 11 in Season 3 (2026). The first episode is a special 90-minute premiere, and a fourth and final season has been announced.
Will there be an Oshi no Ko Season 4?
Yes. A fourth season was announced right after the Season 3 finale in March 2026, and it was confirmed as the final season. No release date has been announced yet.
Is the Oshi no Ko manga finished?
Yes. The manga by Aka Akasaka and Mengo Yokoyari ended on 14 November 2024 with 166 chapters, collected in 16 volumes. By the end of Season 3, the anime had adapted the story up to chapter 127.
Why is the first episode of Oshi no Ko 90 minutes long?
The premiere is a feature-length episode because it tells Ai Hoshino's complete opening story, her secret pregnancy, the twins' birth and the event that drives the whole series. It was even screened in Japanese cinemas before the TV broadcast.
Watch Order
Here is the release order for Oshi no Ko and the series connected to it. Start at step 1 and work your way down.
- 1Oshi no KoSeason 1 (2023): this series; Ai's story and the twins' childhood. 11 episodes, starting with a 90-minute premiere.
- 2Oshi no Ko Season 2Season 2 (2024): the Tokyo Blade stage play arc. 13 episodes.
- 3Oshi no Ko Season 3Season 3 (2026): Ruby's rise, a scandal, and the film about Ai begins. 11 episodes.
- 4Oshi no Ko Final SeasonFinal season (announced 2026): the announced last season; release date not yet revealed.
Where to Watch
Oshi no Ko is officially available to stream on these platforms:
Streaming availability changes often and differs by country. Please check the platform in your region.