I'll Live a Long Life to Dote on My Favorite Stepbrother! Anime: Where to Watch, Cast, Novel & Manga

The I'll Live a Long Life to Dote on My Favorite Stepbrother! anime ran for 12 episodes in the Winter 2026 season. It streamed early on Amazon Prime Video in Japan from January 3, 2026, then aired on tvk from January 6 to March 24. Alba wakes up reborn as a sickly young noble who can't use magic and isn't expected to live long. Then his mother remarries into a duke's family, and his new stepbrother turns out to be Orsis, his favorite character from an otome game he loved in his past life. That should be a dream come true, except Alba remembers how the game's story goes: his own early death is what takes Orsis's smile away for good.

I'll Live a Long Life to Dote on My Favorite Stepbrother! Release Date and Global Streaming Schedule

All 12 episodes have aired, so the whole season is available to watch. That helps, because the story's emotional payoff builds steadily toward the final episodes, and the episode 11 and 12 searches show plenty of viewers rushing to see how Alba's fight to survive turns out.

OceanVeil vs. Prime Video: Where to Watch

Outside Japan, the anime's streaming license is held by OceanVeil, a streaming service run by the Japanese company WWWave. It isn't listed on Crunchyroll, despite how often people search for it there, so check OceanVeil's catalog for English subtitles in your region. In Japan, Amazon Prime Video had the early premiere on January 3, 2026, and the series also aired weekly on tvk. The official anime site has the full Japanese broadcast details. No English dub has been announced.

Broadcast Time & Episode Rollout

The TV run started on Tuesday, January 6, 2026, on tvk (TV Kanagawa), and a new episode aired every Tuesday until the finale on March 24. Prime Video in Japan was three days ahead, starting on January 3.

Where to watch is the easy part. The real question is how a boy who isn't supposed to live long plans to change his fate.

I'll Live a Long Life to Dote on My Favorite Stepbrother! Plot: Rewriting a Tragic Fate

Alba was reborn as the son of a poor noble family, frail and unable to use magic. When his mother remarries a duke, Alba gains a new home, a new family and a stepbrother he already adores: Orsis, the character he loved most in the otome game from his previous life. In that game, Orsis was known for losing his smile. Alba quickly realizes why. In the original story, Orsis's little stepbrother dies young, and the grief changes him forever. Alba is that stepbrother.

So Alba sets himself a simple goal with very high stakes: live as long as possible. If he survives, Orsis never has to grieve him, and Alba gets to keep doting on his favorite person. The anime describes itself as a warm, gentle isekai "boys' life" story, and that tone carries the whole series. It's less about battles than about a fragile kid fighting his own body, one day at a time, out of love for someone else.

Alba and Orsis: A Fan Who Becomes Family

The heart of the series is the relationship between Alba and Orsis. Alba starts out as a fan, someone who knows Orsis as a character on a screen, and slowly has to learn who Orsis actually is as a person, and how to be a real brother to him. Orsis, for his part, gains a younger brother whose health is fragile and whose devotion is completely open.

That dynamic is why the series appeals to readers who enjoy devoted, emotional relationships. The light novel is published under AlphaPolis's &arche imprint, which focuses on boys' love, while the anime keeps its focus on warmth, family and Alba's fight to stay alive. Whether you watch it as a heartfelt brotherly story or something more, the emotional question is the same: can Alba change a fate he already knows?

To answer that, you need to know the people who stand around Alba and Orsis.

I'll Live a Long Life to Dote on My Favorite Stepbrother! Characters & Voice Cast

The cast is small and built around the two brothers. Ayumu Murase voices Alba with bright, earnest energy, and Shōta Aoi plays Orsis and also sings the ending theme, "Endless You." Here are the leads with their Japanese voice actors (CV).

The supporting cast completes the household and the world around it:

• Hals (CV: Reo Tatsumori)
• Floro (CV: Maaya Torigoe)
• Bruno (CV: Yūya Hirose)

Twelve episodes give these characters a strong start, but the novel and manga take Alba's story much further.

I'll Live a Long Life to Dote on My Favorite Stepbrother! Novel & Manga Guide: Where the Anime Picks Up

The story began as a web novel by Tenma Asahi on AlphaPolis's website in September 2021. AlphaPolis has published it as a light novel since November 2022, with illustrations by Kazuaki, and six volumes were out by December 2025. The manga adaptation by Aki Tsujimoto started in January 2024 and had three volumes by February 2026. According to the anime's official introduction, the series has sold more than 170,000 copies in Japan, a strong number for a gentle, character-driven story like this one.

One common mix-up: despite the searches for a "manhwa," this is a Japanese series, not a Korean webtoon. There's a light novel and a Japanese manga, and no official English release of either has been announced as far as we can find.

No official source gives the exact chapter where the anime stops. With six novel volumes and the anime covering only part of them, there is clearly more story to read, and the series is still ongoing in Japan.

That leaves the question every fan of Alba and Orsis asks after the finale: is there more anime coming?

Frequently Asked Questions About I'll Live a Long Life to Dote on My Favorite Stepbrother!

Where can I watch I'll Live a Long Life to Dote on My Favorite Stepbrother!?

Outside Japan, the anime is licensed by the streaming service OceanVeil, and it isn't listed on Crunchyroll. In Japan it premiered early on Amazon Prime Video on January 3, 2026, and aired weekly on tvk.

How many episodes does I'll Live a Long Life to Dote on My Favorite Stepbrother! have?

The anime has 12 episodes. It aired on tvk every Tuesday from January 6 to March 24, 2026.

Is I'll Live a Long Life to Dote on My Favorite Stepbrother! a manhwa?

No. It's a Japanese series: a light novel by Tenma Asahi published by AlphaPolis, with a Japanese manga adaptation by Aki Tsujimoto.

What is I'll Live a Long Life to Dote on My Favorite Stepbrother! about?

Alba is reborn as a sickly noble whose new stepbrother, Orsis, is his favorite otome game character. Knowing his early death would make Orsis lose his smile forever, Alba sets out to live as long as he can.

Will there be a Season 2 of I'll Live a Long Life to Dote on My Favorite Stepbrother!?

No Season 2 has been officially announced. The light novel has six volumes and is still ongoing, so there is more story to adapt.

Related Videos

Start with the second trailer, then go back to the original teaser.

Alba is still fighting for a long life with Orsis at his side, and the novel keeps going where the anime stops. For more from the Winter 2026 season, read our Noble Reincarnation guide, browse the Fall 2026 anime schedule for something new, and keep an eye on Upcoming Anime in case a Season 2 is announced.