I'll Live a Long Life to Dote on My Favorite Stepbrother! (2026)
A heartfelt isekai anime about a reincarnated boy who will stop at nothing to protect his beloved stepbrother and rewrite their shared fate.
I'll Live a Long Life to Dote on My Favorite Stepbrother! - Series Information
- Original Title: 最推しの義兄を愛でるため、長生きします！
- First Air Year: 2026
- Last Air Year: 2026
- Type: TV Series
- Genres: Animation, Sci-Fi, Fantasy
- Episode Runtime: Average runtime per episode: 4 minutes
- Number of Seasons: 1
- Number of Episodes: 12
- Status: Returning Series
- Original Language: Japanese
- Spoken Languages: Japanese
- Networks: tvk
- Alternative Titles: Saioshi no Gikei wo Mederu Tame, Nagaiki shimasu! (JP), In Order to Love My Most Beloved Brother-In-Law, I'll Live a Long Life! (US)
- Production Companies: Imagica Infos, Imagica Imageworks, CyberAgent
- Production Countries: Japan
I'll Live a Long Life to Dote on My Favorite Stepbrother! - Plot
Alba has been reincarnated as the son of an impoverished noble family. When his mother remarried into a dukedom, he was introduced to his stepbrother, Orsis, his "favorite person" from his previous life. "Does this mean my favorite is now my stepbrother?" he thought joyfully, But he suddenly remembers that he was the reason his beloved stepbrother lost his smile… To avoid his impending fate, and continue loving his favorite, Alba will do everything in his power to twist fate! This popular series, which has sold over 170,000 copies, brings you a warm and touching story story of a boy's reincarnated life in another world!
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I'll Live a Long Life to Dote on My Favorite Stepbrother! - Cast & Crew
Main Cast
- Ayumu Murase
- Shouta Aoi
- Reo Tatsumori
- Maaya Torigoe
- Yuya Hirose
I'll Live a Long Life to Dote on My Favorite Stepbrother! - FAQs
What is I'll Live a Long Life to Dote on My Favorite Stepbrother! about?
The series follows Alba, a boy reincarnated into a noble family who discovers his beloved stepbrother Orsis is the same "favorite person" from his past life. Haunted by the memory that he once caused Orsis to lose his smile, Alba sets out to rewrite fate and protect the person he cherishes most.
Is I'll Live a Long Life to Dote on My Favorite Stepbrother! based on a book?
The anime is adapted from a popular Japanese novel series that has sold over 170,000 copies. The source material blends isekai reincarnation with a warm, emotionally driven story centered on the bond between two stepbrothers navigating a fantasy world together.
Who voices the main characters in the series?
Ayumu Murase voices the protagonist Alba, while Shouta Aoi brings stepbrother Orsis to life. The supporting cast includes Reo Tatsumori as Hals, Maaya Torigoe as Floro, and Yuya Hirose as Bruno, assembling a strong ensemble of experienced voice actors.
How many episodes does the series have?
Season 1 consists of 12 short-form episodes, each running approximately 4 minutes. The compact runtime makes it an easy watch, delivering its heartfelt isekai story in quick, digestible installments perfect for fans who enjoy bite-sized anime.
What genre is I'll Live a Long Life to Dote on My Favorite Stepbrother!?
The series falls into animation, fantasy, and romance, with strong isekai and boys' love (BL) elements. It combines the reincarnation-in-another-world premise popular in modern anime with a tender, emotionally resonant story about devotion and second chances.
Is I'll Live a Long Life to Dote on My Favorite Stepbrother! a boys' love anime?
The series carries clear boys' love (BL) themes, centering on the deep emotional bond between stepbrothers Alba and Orsis. While rooted in an isekai fantasy setting, the heart of the story is Alba's fierce devotion to Orsis and his determination to protect their relationship at any cost.
What are similar shows to watch after this series?
Fans of this series may enjoy I Was Reincarnated as the 7th Prince so I Can Take My Time Perfecting My Magical Ability, The Faraway Paladin, As a Reincarnated Aristocrat I'll Use My Appraisal Skill to Rise in the World, and The Beginning After the End — all isekai anime with noble settings and compelling character dynamics.
Where can I watch I'll Live a Long Life to Dote on My Favorite Stepbrother!?
The series airs on tvk in Japan. For international streaming availability and viewing options in your region, JustWatch is the best place to check for up-to-date platform listings, including any subscription, rental, or purchase options as they become available.
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