The Millennium Family anime adaptation is officially on the way. The announcement arrived with a teaser visual, a promotional video, and the first look at the main cast and staff behind the upcoming series. While details are still pretty limited — including when the anime will premiere — the announcement is already introducing plenty of anime fans to a manga they may have completely missed. I’ll admit, I was one of them, but after reading about the premise, this unexpectedly landed on my watchlist.
Millennium Family Anime Adaptation Reveals First Cast and Staff
The anime was announced on July 27 alongside the opening of its official website and social media accounts. A teaser visual and promotional video were also released to give fans their first glimpse of the adaptation.
So far, one cast member has been confirmed:
- Theo (Theodore Benfield) – Rikuya Yasuda
The announced staff includes:
- Original Creator: Akira Kasugai
- Director & Series Composition: Masato Jinbo
- Character Design & Chief Animation Director: Hiroshi Yoneda
- Character Design: Ko Yonekura
- Animation Production: PartsCraft
A premiere date has not been announced at this time. https://www.youtube.com/watch?v=q63kCWDTwhY
What Is Millennium Family About?
If this announcement has you wondering what Millennium Family actually is, you’re not alone.
The manga, written and illustrated by Akira Kasugai, began serialization in Young King OURs in 2021. Rather than focusing on a typical fantasy hero, the story follows the Benfield family—seven immortal siblings born in England who have lived for more than a thousand years. Their immortality might sound like the ultimate gift, but it also makes them targets for criminals, military organizations, and anyone else hoping to unlock the secret to eternal life.
After spending centuries scattered across the world, the siblings reunite, only to discover that living together again may be just as chaotic as the dangers hunting them. The series blends action with family comedy, using the siblings’ wildly different personalities and centuries of history to create plenty of humorous moments alongside the more serious conflicts.
Honestly, that’s the part that caught my attention. I’m usually more likely to reach for a romance or comedy than a straight action series, so the mix of immortal family chaos and comedy sounds like a fun change of pace.
||◤ ◥|| TVアニメ『踊る千年家族』 ティザービジュアル公開💥 ||◣ ◢|| ⚡️STAFF＆CAST 原作：春⽇井晶 監督・シリーズ構成：神保昌登 キャラクターデザイン：⽶⽥紘 アニメーション制作：PartsCraft テオ役 CV：#安田陸矢 🎬アニメ化決定PV… pic.twitter.com/YFz0X4rCQX
— ID取得 (@sennenkazoku) July 27, 2026
Early Fan Reactions Are Filled with Curiosity
One of the more interesting things about the announcement is that it doesn’t seem to be coming from an already massive franchise. Early discussions online show that plenty of anime fans are discovering Millennium Family for the first time thanks to the adaptation.
At the same time, readers familiar with the manga have been encouraging newcomers to give it a chance. Several fans pointed to its balance of grounded action, comedy, and quirky family dynamics as the biggest reason they’re excited to see it animated. Others simply felt it was a solid choice for an adaptation, even if it flew under many people’s radar before now.
There’s still a lot we don’t know about the Millennium Family anime adaptation, but that’s pretty normal for a brand-new announcement. Even so, the premise feels refreshingly different from the flood of fantasy series we’ve seen lately. Between the immortal siblings, action, and family comedy, this is definitely one I’ll be keeping an eye on as more information rolls out. My watchlist really didn’t need another addition … but here we are.
Sources: Crunchyroll News Official Millennium Family Anime Website Wikipedia
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