The highly anticipated Harmony of Mille-Feuille (Japanese title: Utagoe wa Mille-Feuille) anime series is officially set to debut on July 17, 2025. This exciting news was revealed in a new promotional video, which also offered a sneak peek at the opening theme song, “Omoide-banashi,” performed by the main cast. The upcoming series promises to deliver a heartwarming narrative centered on the transformative power of a cappella music within the context of high school life.
The Journey to Harmony: Project Origins and Development
The Harmony of Mille-Feuille anime is an adaptation of a broader mixed-media project launched in April 2022 by Pony Canyon and Takuya Yamanaka, known for his work with the rock band The Oral Cigarettes. This ambitious project has explored its themes of “a cappella,” “high school girls,” and “complexes” through various mediums, including voice drama stories, music videos where the voice actresses themselves perform a cappella, and documentary videos detailing their lessons. The decision to adapt this rich universe into an anime series was first announced in June 2023, during the “UtaMilu Event Vol. 1 ~happy to sing~”. Since then, anticipation has steadily built, with key visuals and staff information being unveiled in September 2024, followed by earlier promotional videos that further solidified its July 2025 premiere window.
A Glimpse into the Narrative: Plot and Themes
At its core, Harmony of Mille-Feuille follows the journey of Uta Komaki, a first-year high school student with a deep love for singing but an overwhelming shyness that hinders her social interactions. Her initial attempt to join the light music club is thwarted by her timid nature, leaving her feeling dejected. However, in a moment of despair, Uta discovers the world of a cappella music when she receives an invitation to join an a cappella club from its president, Airi Kojo.
The series tagline, “You don’t have to shine to have youth,” encapsulates the essence of the story. It highlights that even individuals who may not feel conventionally “dazzling” can find profound connections and personal growth through their shared passion and harmonized voices. The a cappella club itself is depicted as a haven for unique and sometimes eccentric individuals, offering Uta a space to overcome her anxieties and forge meaningful friendships. The narrative is expected to explore themes of self-discovery, teamwork, and the joy of creating music together without instrumental backing, showcasing how these young women weave their “imperfect youth” into something truly unique and beautiful.
The Creative Minds Behind the Music: Staff and Studio
The animated adaptation of Harmony of Mille-Feuille is being brought to life by Studio Jumondou. Overseeing the production are a team of experienced creators:
- Executive Director: Takuya Satō, known for his work on series such as Steins;Gate.
- Series Director: Kiyoto Nakajima.
- Series Composition and Scriptwriting: Takuya Yamanaka, the original creator of the mixed-media project, is directly involved in shaping the anime’s narrative.
- Original Character Design: Cherico (chie rico).
- Character Design: Chisato Kikunaga and Hitomi Kaiho.
- Music Composer: Shun Narita, who has worked on titles like Dark Gathering, is responsible for the anime’s musical score.
- Music Production: Pony Canyon, a key player in the original mixed-media project, handles the music production for the anime.
Additional staff members contributing to the visual and auditory experience include Kazuhiro Arai as Art Director, Hitomi Fujii for Color Design, Han Kuk Ju (Guk Ju Han) as Director of Photography, Masahiro Goto (REAL-T) for Editing, and Jin Aketagawa as Sound Director.
The Voices of Harmony: Cast Members
The success of a music-themed anime heavily relies on its voice cast, and Harmony of Mille-Feuille boasts a talented ensemble that brings the a cappella club members to life. The main cast for the central a cappella group includes:
- Uta Komaki (Lead Vocal): Mirai Ayase
- Musubu Mayumori (First Chorus): Yuko Natsuyoshi
- Airi Kojo (Second Chorus, Club President): Kanoko Sudo
- Rei Konoe (Third Chorus): Misato Matsuoka
- Uru Miyazaki (Voice Percussion): Miharu Hanai
- Yako Kumai (Bass): Haruka Aikawa
Beyond the core group, the project also features another a cappella unit named Parabola, with a cast that includes Moeka Koizumi as Mizuki Fujishiro, Asaka as Zoe Delaunay, Nao Toyama as Kikka Sengoku, Yoshino Aoyama as Reira Tamaki, and KIYOZO as Karin Minami. These diverse voices are poised to create a rich tapestry of sound, crucial for an anime centered on a cappella performances.
Anticipation Builds for the July Debut
With the premiere date now firmly set for July 17, 2025, and a new video offering a taste of its musical direction, Harmony of Mille-Feuille is gearing up to be a notable entry in the summer anime season. Anime enthusiasts can look forward to a blend of slice-of-life charm and the compelling artistry of a cappella, presented through a narrative that celebrates finding one’s voice and community. Furthermore, a commemorative live event for the opening theme song is scheduled for August 3 at the Pony Canyon Head Office. As the debut approaches, fans worldwide are eager to experience the melodic narrative of Uta Komaki and her journey into the world of harmonized singing.
