During Aniplex’s AnimeJapan panel, the staff of the Uchi no Otōto-domo ga Sumimasen anime revealed that it will premiere on July 3. Additionally, they have revealed new cast members and a new promo for the upcoming series.
So far, the main cast includes:
- Naomi Ōzora as Ito Narita
- Toshiki Masuda as Gen Narita
- Taku Yashiro as Raku Narita
- Kenshō Ono as Syu Narita
- Momoka Terasawa as Rui Narita
The anime will premiere in two consecutive cours, for a total of 24 episodes, on BS11, Tokyo MX, Gunma TV, and Tochigi TV. The western distributors for the series are currently unknown, however, more details will likely surface at a later date. Check out the latest trailer for Uchi no Otōto-domo ga Sumimasen below:
Hitoshi Nanba directs the Uchi no Otōto-domo ga Sumimasen anime series at Lay-duce. Megumi Shimizu handles the series composition, Shiori Hiraiwa and Yōko Fukushima are the character designers, and Gin is the music composer.
Additional staff members include:
- Art Design: Chie Okubo
- Prop Design: Takashi Akaishizawa
- Color Design: Tomoko Yamazaki
- Director of Photography: Naoki Ishikawa
- Editing: Gō Sadamatsu
- Sound Director: Satoshi Motoyama
- Sound Production: INSPION Edge
Ozaki launched the manga on Shueisha’s Bessatsu Margaret magazine in January 2020. Shueisha has released 14th compiled book volumes as of July 25, 2025.
Lastly, here’s an overview of the manga series, via Manga Dex:
Ito is a second-year high school student and an only child who has to move to a different city; her mother remarried and begins her new life as an older sister of 4 siblings!
The start of a family-love-comedy with four step-brothers ♥
