by The popular manga “After-School Idols Have Secrets” (Houkago no Idol ni wa Himitsu ga Aru) by Amane Kashiko is officially getting a TV anime adaptation. The anime is scheduled to premiere in April 2027, bringing the story of a talented high school idol and the classmate who discovers her hidden secret to the screen.
The anime announcement was accompanied by the release of a teaser visual, along with details about the main cast and production staff. Reiji Kawashima will voice protagonist Hizashi Hiruno, while Hikaru Tono will play popular genius idol Rei Kuromiya. The supporting cast includes Iori Noguchi of =LOVE as Sakura Akai and Ami Maejima as Sora Konno.
The announcement has already attracted attention among fans of school romance, idol anime, and character-driven coming-of-age stories. Unlike a conventional idol series focused primarily on performances and the entertainment industry, After-School Idols Have Secrets places its emphasis on the private side of a young idol’s life and the special relationship that develops after school.
What is ‘After-School Idols Have Secrets’ about?
The original manga by Amane Kashiko is currently serialized through Hakusensha’s Young Animal Web. The story centers on Hizashi Hiruno, a serious and hardworking first-year high school student, and his beautiful classmate Rei Kuromiya.
At school, Rei appears to be almost perfect.
She is academically talented, beautiful, and admired by the students around her. On top of that, she is a successful idol who is widely regarded as a “rare genius idol.”
However, Rei has a secret that she does not want anyone else to know.
Hizashi accidentally discovers that secret. From that moment, the two classmates begin spending more time together after school. What begins as an unexpected connection gradually develops into a much closer relationship.
The official story description presents the central idea simply: Rei is a famous idol and a perfect student in public, but Hizashi becomes one of the few people who knows about the side of her that she keeps hidden. Their unusual after-school relationship becomes the foundation of the story.
The teaser visual also emphasizes this contrast. Its central message is “A secret she can’t tell anyone.” The image shows Hizashi and Rei in a school setting, suggesting the distance between their ordinary classroom relationship and the more personal connection they develop after school.
Reiji Kawashima voices Hizashi Hiruno.
Reiji Kawashima will play Hizashi Hiruno, the male protagonist.
Hizashi is a serious and hardworking first-year student. He puts considerable effort into his studies but lacks confidence in himself and is not particularly outgoing. His earnest personality sometimes causes him to overthink situations or work harder than necessary, but his willingness to make an effort for someone else is one of his defining qualities.
Kawashima explained that Hizashi may not have much confidence, but he is willing to take a step forward for the person in front of him, even when doing so is difficult.
The actor also highlighted an important theme of the story: studying has correct answers, but relationships and love do not always have simple solutions.
In the story, Hizashi finds himself spending time alone with Rei during supplementary lessons. He becomes increasingly aware of the unusual distance between them, while the two gradually begin learning more about each other.
This makes Hizashi an approachable protagonist for viewers who enjoy romance stories built around small emotional changes rather than immediate dramatic developments.
Hikaru Tono plays genius idol Rei Kuromiya.
Hikaru Tono will voice Rei Kuromiya, the series’ central female character.
Rei is an accomplished idol who appears to have everything. She is academically gifted, beautiful, talented, and successful in her entertainment career. Her public image is that of a perfect idol who can meet the expectations placed upon her.
But behind that image is an ordinary high school girl.
Tono commented that Rei works extremely hard to live up to the expectations surrounding her as a perfect idol. At the same time, she still has the innocence and emotions of a normal teenage girl.
According to Tono, one of the appealing aspects of Rei is watching her discover new emotions while spending time with Hizashi. This creates a contrast between “genius idol Rei Kuromiya” and the more natural, vulnerable side of Rei that she can reveal away from the public eye.
That contrast is expected to be one of the anime’s main attractions.
Fans will be able to see Rei not only as a successful idol performing in front of large audiences, but also as a student navigating friendships, emotions, expectations, and relationships.
Iori Noguchi joins the cast as Sakura Akai.
The anime also features Iori Noguchi, a member of the idol group =LOVE, as Sakura Akai.
Sakura is the reliable eldest member of the idol group Aiiro Impulse, the group associated with Rei. While she appears cool as an idol, Noguchi describes Sakura as a bright, cheerful, caring “older-sister” type behind the scenes.
Noguchi said she imagined what kind of Sakura would make fans feel excited and tried to bring that charm into her performance.
Her role could provide an important connection between Rei’s public idol life and her private school life, while also adding another personality to the central cast.
Ami Maejima voices Sora Konno
Ami Maejima will play Sora Konno, another member of Aiiro Impulse.
Sora is described as a laid-back character who does not easily get swept up by the people around her. She can also tease Rei and has a playful side.
However, Sora is not simply a carefree character. She is also attentive to the feelings of her friends and can encourage Rei when necessary. Maejima described Sora as someone who openly expresses her emotions and has a strong sense of kindness toward the people around her.
This gives Aiiro Impulse a cast with different personalities rather than presenting the idol group as a single unified image.
A romance that begins after school
One of the most appealing aspects of After-School Idols Have Secrets is the contrast between Rei’s public life and private life.
During school hours, she is the famous idol everyone admires. She has to maintain her image and meet the expectations of fans and those around her.
After school, however, she can gradually show another side of herself.
Hizashi becomes connected to this private side after discovering her secret. Because he is not initially part of her glamorous idol world, their relationship has a different feeling from Rei’s interactions with fans and fellow performers.
The story therefore combines several familiar anime themes:
- High school romance
- Secret identities and hidden sides
- Idol culture
- Coming-of-age drama
- After-school friendship
- Academic life
- Character-driven comedy
- Slow-burn emotional development
For beginners, the premise is easy to understand: a normal high school boy discovers that his seemingly perfect classmate is hiding something, and that discovery brings the two closer together.
The Aiiro Impulse idol group
The idol group Aiiro Impulse is another important element of the story.
Rei is a member of the group alongside Sakura and Sora. This allows the anime to move between two different worlds: the ordinary school environment and the professional idol environment.
The contrast should also help viewers understand why Rei behaves differently depending on where she is.
At school, she is a student. On stage, she is an idol expected to perform and maintain a particular image. Her private interactions with Hizashi provide a third space where she can gradually become more comfortable expressing herself.
The anime’s staff and cast comments suggest that this mixture of idol activities and everyday teenage emotions will be central to the adaptation.
Anime staff announced
The TV anime is being produced by Gekkou.
The confirmed staff members are:
- Original work: Amane Kashiko
- Director: Hikaru Sato
- Series Composition & Screenplay: Fumihiko Shimo
- Character Design: Kibidango No. 14
- Music: Satoru Kousaki & MONACA
- Animation Production: Gekkou
- Producer: Ryo Aizawa / Starry Cube
- Production: Aiiro Impulse
The combination of Satoru Kousaki and MONACA for the music is particularly relevant for a series that features idol characters. Music is likely to play an important role in representing both the glamorous performance side of Rei’s life and the quieter atmosphere of her after-school relationship with Hizashi.
Original creator Amane Kashiko reacts to the anime adaptation
Original creator Amane Kashiko also shared a message following the anime announcement.
Kashiko expressed excitement at finally seeing Rei sing and dance as an animated idol and seeing Hizashi move on screen. The creator also noted that the anime will add voices, sounds, and atmosphere that could not be directly experienced through the original manga.
That comment highlights one of the biggest differences between manga and anime adaptations.
The manga allows readers to imagine the characters’ voices and the sound of their surroundings. The anime, on the other hand, can bring those elements directly into the story through voice acting, music, sound effects, and animation.
For a series involving idols, this could be especially important because viewers will be able to experience Rei and Aiiro Impulse through actual performances rather than still manga panels.
Why the anime adaptation is attracting attention
The announcement brings together several popular anime elements without making the story dependent on a complicated fantasy setting.
At its heart, After-School Idols Have Secrets is a school romance about two teenagers who gradually become closer after one of them discovers something the other wants to keep hidden.
The idol element adds another layer.
Rei is not simply the popular girl at school. She has a second life that requires hard work, discipline, and constant attention to her public image. That creates opportunities for the story to explore how different a person can appear depending on the people around them.
Hizashi also provides an interesting contrast. He is not presented as an effortlessly confident protagonist. Instead, he is hardworking, somewhat insecure, and still learning how to interact with others.
This means the relationship between the two characters can develop gradually as they learn to understand each other’s strengths and weaknesses.
What to expect from the 2027 anime
The anime is scheduled to begin in April 2027, although a more specific broadcast date has not yet been announced. Current announcements have confirmed the main cast, staff, teaser visual, and basic premise.
No opening or ending theme songs have been announced in the information currently available, so those details remain something fans will have to wait for.
The series also has an upcoming promotional appearance at “StarryCube ANIME FES 2026 powered by Waseda University Anime Voice Actors Association” on November 7, 2026, where Hikaru Tono and Ami Maejima are scheduled to appear from the series.
As the April 2027 premiere approaches, additional information about the broadcast schedule, promotional videos, music, and other cast members is expected to be announced.
‘After-School Idols Have Secrets’ Anime: Quick Facts
Title: After-School Idols Have Secrets
Japanese title: Houkago no Idol ni wa Himitsu ga Aru
Genre: School romance, idol, comedy
Original creator: Amane Kashiko
Original publisher/platform: Hakusensha / Young Animal Web
TV anime premiere: April 2027
Director: Hikaru Sato
Series Composition & Screenplay: Fumihiko Shimo
Character Design: Kibidango No. 14
Music: Satoru Kousaki & MONACA
Animation Studio: Gekkou
Main Cast
- Hizashi Hiruno: Reiji Kawashima
- Rei Kuromiya: Hikaru Tono
- Sakura Akai: Iori Noguchi (=LOVE)
- Sora Konno: Ami Maejima
After-School Idols Have Secrets is shaping up to be an interesting addition to the Spring 2027 anime season, especially for viewers who enjoy school romance mixed with idol stories.
The central mystery surrounding Rei’s secret gives the story an immediate hook, while the relationship between Rei and Hizashi provides its emotional foundation. The presence of Sakura and Sora also expands the story beyond the two main characters and introduces viewers to the idol world surrounding Rei.
With Reiji Kawashima and Hikaru Tono leading the cast, Iori Noguchi and Ami Maejima joining as members of Aiiro Impulse, and music from Satoru Kousaki and MONACA, the anime has already established a strong creative lineup.
The biggest question remains: What exactly is Rei’s secret, and how will discovering it change her relationship with Hizashi?
Viewers will have to wait until April 2027 to see how this unusual after-school relationship unfolds. The anime’s newly revealed teaser visual and cast announcements have given fans their first glimpse, but there is still much more to learn before the premiere.
