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

After dying and waking up in a fantasy world, Alba finds himself reborn as a sickly noble kid who can't use magic and isn't expected to live very long. That's already a rough deal, but here's the twist — when he's taken in by a duke's family, he realizes his new stepbrother Orsis is the character he loved most in his previous life. The catch? In the original story, Alba's early death is what causes Orsis to lose his smile forever. So now Alba's on a quiet, desperate mission to find a way to extend his own lifespan, not for himself, but so the person he cares about most never has to grieve him. It's a really specific kind of devotion that hits different when you sit with it. This is a boys' love story at its core, but it's wrapped in isekai and reincarnation tropes that give it more narrative weight than you might expect. The noble family dynamics, the magical limitations, the ticking clock on Alba's life — it all creates this gentle tension underneath the warmth. If you liked the "reborn into a story and trying to change fate" angle of My Next Life as a Villainess but want something more emotionally intimate, or if you're into the character-driven romance of Sekaiichi Hatsukoi with a fantasy setting layered on top, this TV series from Imagica Infos and Imageworks Studio is worth keeping on your radar for 2026.