Mutsumi Tamura will be joining the voice cast of the upcoming Millennium Family TV anime series. A premiere date for the anime has not yet been announced.
Tamura will voice the character Arthur Benfield, who is the fifth son and youngest child in the Benfield family. She previously voiced Dara-san in Dara-san of Reiwa.
She joins a previously announced voice cast that will star:
- • Rikuya Yasuda as Theo Benfield
- • Katsuyuki Konishi as Hayden Benfield
- • Ryota Suzuki as Hugo Benfield
- • Lynn as Eve Benfield
- • Taihi Kimura as Noel Benfield
- • Haruna Mikawa as Raine Benfield
Masato Jinbo (Ghost Concert: Missing Songs, The Quintessential Quintuplets Movie, The Quintessential Quintuplets*, The Rising of the Shield Hero Season 2) is directing the anime series and serving as series composer, with Hiroshi Yoneda as character designer. PartsCraft is handling the animation production.
The action comedy manga series by Sho Kasugai has been serialized in Shonengahosha’s YOUNG KING OURS magazine since March 30, 2021. Nine tankobon volumes have been released in Japan as of July 2026. It is known in Japanese as Odoru Sennen Kazoku.
AI localization company Orange Inc.’s emaqi manga platform releases the Millennium Family manga in English digitally. It describes the synopsis as:
Seven immortal siblings born in England possess humanity’s ultimate dream: eternal life. But their gift makes them targets for the criminal underworld, corrupt hospitals, and international military organizations! After centuries apart, this extraordinary family reunites for a thrilling new chapter in their lives.
Sources: Millennium Family Official X/Twitter (2), official anime website, Anime News Network
