Toward the “era when fans become official.” Two new songs born from the participatory music project “Project B-idol” Karaage Project Press Release: October 21, 2025 Towards an “era where fans become official.” Two new songs born from the participatory music project “Project B-idol” ── Co-created by voice actors Chihaya Yoshitake and Rikanade Otoha, and music producer Ken Iijima, pre-released on M3 Project B-idol is pleased to announce that two songs selected from the general public in the third call for submissions for jacket illustrations and music creators have been officially adopted as “official works” and will be released
consecutively in October and November.
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collaboration with leading professionals. Project B-idol takes a new approach by “opening” rather than “closing” the IP, providing a mechanism for fans to participate in official production. Background: From “fan participation” to “official production” of UGC In recent years, user-generated content (UGC) has grown rapidly in fields such as video, illustration, and music, and is a driving force behind the creation of new IP both domestically and internationally. In the music industry, too, there have been increasing examples of “individual” creations entering commercial distribution, such as hits born from Vocaloid culture and doujin music. In light of this trend, Project B-idol has created a system that positions UGC not simply as “fan activity” but as “part of official production.” In addition to music, the company is also recruiting creators to create jacket illustrations on Charaforio, Sanrio’s character IP platform, realizing official fan participation in production. By taking a new approach that opens up IP rather than closing it, we’re providing a mechanism for fans to participate in official production.
https://prcdn.freetls.fastly.net/release_image/171029/1/171029-1-7a96d09663dcd3f050289ccc8fa4d2eb-1280×720.png ◆ Selected Works “Encore” Music Production: Nadekata P (First Selected Creator) Cover illustration: akAgi Vocalist: Kamille (CV: Otowa Rikanade) Release date: October 27, 2025 “Cobalt” Music Production: Takabayashi Haruki Cover Illustration: Hiyoyo Vocalist: Amelia (CV. (Yoshitake Chihaya) Scheduled for release in late November (details to be announced later) Both songs will be produced under the direction of music producer Ken Iijima, who also worked on the theme song for the anime “Yuru Yuri,” “Yuri Yura Rarara Yuru Yuri Daijiken.” The combination of “creator-driven works” and “leading professional voice actors and musicians” will result in high-quality official works that are fan-participatory.
https://prcdn.freetls.fastly.net/release_image/171029/1/171029-1-6d1fd157978f7c27534dff6c95efbdfd-1000×1500.jpg Rin Otowa (voice of Kamille) When I first heard the song, I was delighted by how cute and typical of Camille it was (heart). I was also moved by the delicate development of the pitch and rhythm, and the progression through key changes and odd time signatures, which seemed to express her life as an idol. ‘I wonder what feelings Camille puts into singing this song?’ I had many conversations with her heart and the song while recording!
https://prcdn.freetls.fastly.net/release_image/171029/1/171029-1-cb586849fd0d9a8d7b69a5a81f62feab-1333×2000.jpg Chihaya Yoshitake (role of Amelia) Amelia’s new song! First of all, I’m so happy!! I think it’s a refreshing and vibrant song that suits Amelia’s color, cobalt blue. I hope you enjoy watching him move forward straight towards his dreams♪ Ken Iijima “Encore” is a delicate, gorgeous, and dynamic song, like a scene from Broadway. Otoha’s rich expressiveness and Sloped Shoulder P’s meticulous arrangement are truly stunning, and the mix was carefully crafted to ensure each and every note stands out. I’d be delighted if I could picture Camille singing with a big band behind her. “Cobalt” is an exhilarating rock number that brings to mind a piercing blue sky. Yoshitake’s cute and powerful vocals are a perfect match for the lyrics and arrangement, which exude forward-moving energy. Although it sounds simple, the phrasing and breathing are actually quite difficult, so we asked for a mix that would bring out the energy of the band sound. 【Release Schedule】 October 26th: CD pre-sale at the music event “M3” October 27th: “Encore” begins distribution on various music streaming services “Cobalt” will be available on various music streaming services in late November (details to be announced at a later date) The CD will also be available for purchase at the official online store, “B-idol SHOP.” https://b-idol.booth.pm/ The Value of a Participatory Production Model Project B-idol proposes a new creative cycle in which “general creators participate in the production of official IP and create works together with professionals.” This aims to create a mutually beneficial structure: creators can gain achievements that will remain in their portfolios, and IP management can expand their passion and creative base through fan participation. We aim for this model to become a new example of “participatory IP development” in the entertainment industry going forward. What is Project B-idol
https://prcdn.freetls.fastly.net/release_image/171029/1/171029-1-830b29e7fd1ad5b45907e877e3811199-996×996.png Project B-idol is a new IP (character content) development project that allows fans and creators to actively participate in fan-created content. Based on the concept of “everyone can freely enjoy and participate in derivative works,” the project officially accepts creative activities across a wide range of genres, including music, illustrations, videos, stories, and cosplay, and actively utilizes UGC (User Generated Content). In addition, with an eye toward a future anime adaptation, the project aims to realize an “open IP development model” that fosters content together with fans through UGC. Cast Rin Arisa Aihara Amelia Chihaya Yoshitake Sofia Yuki Nagaku Youran Yuka Nishio Camille Rika Otoha Emma Reina Hasegawa Official link Official website: https://project-b-idol.com/ Official X (old Twitter): https://twitter.com/project_b_idolj YouTube Channel:
https://www.youtube.com/@b-idol Producer Yamato Chikamochi Profile Worked in the planning and development of character IP at The Pokémon Company and Bushiroad, among others. While he is involved in a wide range of work, from IP creation to brand strategy and licensing, he has also been involved in derivative creative culture, having long been involved in large-scale doujinshi sales events and the World Cosplay Summit. Utilizing his experience in both original creation and fan culture, he is working to expand the value of IP in the creative industry and create a sustainable fan ecosystem.
X：https://x.com/y_chikamochi note：https://note.com/ychikamochi [Inquiries regarding this matter] Project B-idol Management Team (Contact: Chikamochi) Email: info@project-b-idol.com