iri to Make Anime Theme Debut With Firefly Wedding Opening
The series premieres October 9 on Fuji TV's Noitamina block, with Crunchyroll streaming episodes as they air.

iri will perform “Period,” the opening theme for Firefly Wedding and her first anime song. A new promotional video previews the track, which launches November 18.
The staff behind the television anime adaptation of Oreko Tachibana's Firefly Wedding manga announced Friday that iri will sing its opening theme, “Period.” The track marks her first song for an anime.
A newly released promotional video previews the song, which launches on November 18.
The anime premieres October 9 on Fuji TV's Noitamina programming block, which airs Fridays at 11:30 p.m. Crunchyroll will stream the series as it airs.
The announced cast includes:
- Lynn as Satoko Kirigaya
- Kōki Uchiyama as Shinpei Gotō
- Kent Itō as Kōtarō Ogawa
- Kenjirō Tsuda as Mitsueda
The production staff includes:
- Director Takahiro Kamei (2022–2024's Urusei Yatsura), working at david production
- Character designer Yukiko Aikei (Horizon in the Middle of Nowhere, Words Bubble Up Like Soda Pop, Your Lie in April)
- Series script supervisor and writer Yūko Kakihara (the 2022–2024 Urusei Yatsura series, IRODUKU: The World in Colors, Blue Box)
- Music composer NOGRID
TOOBOE performs the ending theme, “Yumegokochi” (Trance).
Viz Media publishes the manga in English. Its synopsis introduces Satoko as a beautiful nobleman's daughter at an ideal age to marry. Despite those advantages, she is seriously ill and has little time left to live.
Satoko hopes to arrange a marriage that will restore her worth in her family's eyes. Those plans unravel when the mysterious assassin Shinpei targets her. Desperate to survive, she proposes marriage to him—but Shinpei takes the vow to remain together until death literally when it comes to love.
Tachibana began the manga on Shogakukan's Manga ONE app in January 2023. Shogakukan released its 12th compiled book volume on June 19.
Sources: Press release via ANN







