Kasumi Fugetsu Debut Single Sets October 26 Streaming Release
The single is positioned as a cross-media hinge: the same five characters perform as VTubers and feed fan interaction back into the IDOL:UnderCode narrative, so the music release is also a story event rather than a standalone track.
Key Facts
- Kasumi Fugetsu releases its debut song "Mada Owarenai yo ne?" on streaming and sales services on Monday, October 26, 2026.
- Advance streaming of "Mada Owarenai yo ne?" on TikTok begins Sunday, October 18, 2026.
- Kasumi Fugetsu has five members: Akane Kirishima, Airi Shinonome, Hiyori Hanamura, Matsuri Asahina, and Saya Sakakibara.
- Ryota Saito and Diz of HOVERBOARD Inc. wrote the lyrics and music for "Mada Owarenai yo ne?".
- The release covers TikTok, Apple Music, Spotify, YouTube Music, and Amazon Music, among other services.
Reporting from 2 sources: ASCII.jp, PANORA.
PANDORA Inc. and L&L Victor Entertainment Inc. will release "Mada Owarenai yo ne?", the debut song of Kasumi Fugetsu, the in-story idol group from the media-mix project IDOL:UnderCode, on streaming and sales services on Monday, October 26, 2026. Advance streaming on TikTok begins Sunday, October 18. The song is the group's first original track, written and composed by Ryota Saito and Diz of HOVERBOARD Inc. Kasumi Fugetsu has five vocal members: Akane Kirishima, Airi Shinonome, Hiyori Hanamura, Matsuri Asahina, and Saya Sakakibara. The project spans anime, VTubers, and games, and the same characters operate as VTubers outside the story, which is why a song release doubles as a story beat. The listed services are TikTok, Apple Music, Spotify, YouTube Music, and Amazon Music, among others. A pre-save and pre-add link is live. Saito and Diz have both written for the Love Live! series, including Love Live! Nijigasaki High School Idol Club.
The five members have individual TikTok accounts, and the release plan builds outward from TikTok: short videos made around the song, VTuber activity, and later story developments. Each member enters the group with a separate backstory. Akane Kirishima, for example, keeps chasing an idol career despite being born into a prestigious family in the underworld.
Ryota Saito and Diz both work at HOVERBOARD Inc. Saito studied commerce at Keio University, played in an orchestra club in junior and senior high, and performed at Yokohama Arena while still in high school. He co-wrote Nogizaka46's "Sing Out!" with TETTA, which took the Japan Record Award's Excellence Award, and ranked 3rd among composers in the 2019 annual hit rankings. Diz joined HOVERBOARD after taking the semi-grand prize in the SOUND DESIGNER arrangement contest. In his teens he handled songs for the Love Live! series, and he has since provided and arranged for SUPER EIGHT (formerly Kanjani∞), Dennou Shoujo Shiro, and hololive's AZKi × Hoshimachi Suisei. He now writes, arranges, and sings every song for his own unit, Sifneos.
The project's stated theme pairs "idol = light" with "undercode = darkness." Fan communication from VTuber activities, including TikTok LIVE, feeds back into the story and expands into anime, music, games, and live events.
Synthesized by Yomimono from the 2 cited sources below, including Japanese-language reporting where cited, then editorially reviewed before publishing.