The highly anticipated anime series 'Uchi no Otōto-domo ga Sumimasen' has revealed exciting new details, including its theme songs and additional cast members, in a recently released second promotional video. The series, which is set to debut on July 3, will feature music performed by popular artists DISH// and Reira Ushio, adding to the excitement surrounding its launch.

As fans eagerly await the premiere, the promotional video showcases not only the captivating animation but also hints at the storyline and character dynamics that will unfold over the course of the 24-episode series. The inclusion of well-known artists for the theme songs is expected to enhance the viewing experience, drawing in both anime enthusiasts and music fans alike.

In addition to the theme songs, the promotional video also introduces more cast members, further enriching the character lineup that viewers can look forward to. While specific details about the characters and their roles remain somewhat vague, the anticipation continues to build as the release date approaches.

For those interested in following the latest updates on 'Uchi no Otōto-domo ga Sumimasen', staying tuned to official announcements will be key as more information is likely to be revealed in the coming weeks.

For further details, fans can check out the full article on Anime News Network [here](https://www.animenewsnetwork.com/news/2026-05-24/uchi-no-ototo-domo-ga-sumimasen-anime-reveals-theme-songs-more-cast-in-2nd-promo-video/.237744).