The I’m Sorry About My Younger Brothers anime is now less than a week away from its premiere, and the upcoming shoujo romance series is giving fans one more look at its growing family dynamic. Also known as Please Excuse My Younger Brothers and by its Japanese title Uchi no Otōto-domo ga Sumimasen, the anime recently released a creditless version of its opening sequence ahead of its July debut.
With a new trailer, fresh key art, and a two-cour run already confirmed, the adaptation of Akira Ozaki’s popular manga is shaping up to be one of the romance titles to watch during the Summer 2026 anime season. And honestly, as anime-loving moms and romance fans know, give us a big family, a little chaos, and some heartwarming moments, and we’re already interested.
I’m Sorry About My Younger Brothers Anime Premieres in Early July
The I’m Sorry About My Younger Brothers anime is scheduled to begin broadcasting in Japan on July 3, with the series set to run for two consecutive cours for a total of 24 episodes.
Based on Akira Ozaki’s manga, the story follows high school sophomore Ito Narita, whose life changes dramatically after her mother remarries. Following the move to her new home, Ito discovers that she suddenly has four younger stepbrothers: Gen, Raku, Shu, and Rui.
While Ito initially struggles to adjust to her new family, she gradually learns that her new siblings are kinder than she expected—especially the eldest brother, Gen.
The manga first began serialization in Shueisha’s Bessatsu Margaret magazine in January 2020 and has been collected into 15 volumes as of June 2026. The series was also adapted into a live-action film that premiered in Japanese theaters in December 2024.
New Opening Video Released Ahead of Premiere
With the premiere date fast approaching, the production committee has released a creditless version of the anime’s opening sequence.
The opening theme song, titled “Aikotoba”, is performed by Japanese band DISH//. The song will be released digitally on July 3, while a CD single is scheduled to launch on August 26.
In addition to the opening video, the anime recently unveiled a new teaser trailer and updated key visual, giving fans another look at Ito and her four stepbrothers before the series officially begins airing.
The promotional material highlights the series’ blend of family comedy, romance, and emotional moments, all staples that have helped the original manga build a dedicated fanbase.
Cast and Staff for I’m Sorry About My Younger Brothers Anime
The I’m Sorry About My Younger Brothers anime is directed by Hitoshi Nanba at animation studio Lay-duce. Series composition is handled by Megumi Shimizu, while Shiori Hiraiwa and Yoko Fukushima are credited with character designs. Music for the series is composed by Gin of BUSTED ROSE.
The main cast includes:
- Naomi Ozora as Ito Narita
- Toshiki Masuda as Gen Narita
- Taku Yashiro as Raku Narita
- Kensho Ono as Shu Narita
- Momoka Terasawa as Rui Narita
- Daisuke Ono as Isao Narita
- Aya Endo as Saho Narita
Several of the cast additions were announced alongside the anime’s recent promotional updates, giving fans a fuller picture of the Narita family’s voice lineup ahead of the premiere.
₊˚ ✧ ‿︵‿୨୧‿︵‿ ✧ ₊˚
𝐊𝐄𝐘𝐕𝐈𝐒𝐔𝐀𝐋 ˎˊ˗
₊˚ ✧ ‿︵‿୨୧‿︵‿ ✧ ₊˚はじまりは、ひとつ屋根の下。
弟×4とのにぎやかな毎日が織りなす、
スイートホームラブコメ開幕!!📺𝟐𝟎𝟐𝟔.𝟎𝟕.𝟎𝟑 𝟐𝟒:𝟎𝟎~｜𝐎𝐍𝐀𝐈𝐑https://t.co/pXhSf8wrh4#うち弟アニメ pic.twitter.com/9nHFXbB7bq
— TVアニメ「うちの弟どもがすみません」公式｜2026年7月3日(金)24:00より放送💛 (@uchioto_anime) March 28, 2026
What Is I’m Sorry About My Younger Brothers About?
Crunchyroll describes the upcoming romance series as the story of Ito Narita, a high school sophomore who suddenly finds herself living with an entirely new family after her mother’s remarriage.
After moving in, Ito learns that her new stepfather has four sons: Gen, Raku, Shu, and Rui. Overnight, she becomes their older sister and must navigate unfamiliar family dynamics while trying to settle into her new life.
As the siblings slowly grow closer, the series explores both the challenges and heartwarming moments that come with becoming a family.
Where to Watch I’m Sorry About My Younger Brothers Anime
Crunchyroll will stream the I’m Sorry About My Younger Brothers anime as part of its Summer 2026 anime lineup.
Fans should note that the series may appear under alternative English titles depending on the platform or region. Some outlets, including Crunchyroll, have referred to the adaptation as Please Excuse My Younger Brothers, while others use I’m Sorry About My Younger Brothers.
No matter which title appears on your watchlist, romance and shoujo fans won’t have to wait much longer before meeting Ito and the Narita brothers when the series premieres next week.
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