Shouta Aoi doing both voice acting and the ending theme is perfect—his dual role as Orsis and ED performer adds extra connection to the series. The new cast additions sound promising and will flesh out the world around Alba and Orsis. Having more voice samples helps build anticipation; getting to hear the characters interact makes the wait for January easier.

The upcoming light anime based on the boys' love isekai fantasy light novel series "Saioshi no Gikei o Mederu Tame, Nagaikishimasu!" ("I'll Live a Long Time In Order to Cherish My Favorite Step-Brother!") revealed a new trailer, three new cast members, and information about the ending theme song today. The series broadcasts in Japan beginning on January 6, 2026.

WATCH THE NEW TRAILER: Saioshi no Gikei o Mederu Tame, Nagaikishimasu! Trailer

New Cast Members

Harus - Reo Tatsumori

Floro - Maaya Torigoe

Bruno - Yuya Hirose

Ending Theme

"Endless You" performed by Shouta Aoi

The ending theme is sampled in the new trailer. Notably, Shouta Aoi also plays the role of Orsis, one of the two leading characters, making him both a voice actor and theme song performer for the series.

Main Cast

Alba - Ayumu Murase (Known for: Shoyo Hinata in Haikyu!!, Yuki Uehara in Now That We Draw)

Orsis - Shouta Aoi

Production Details

Original Work:

• Writer: Tenma Asahi

• Illustrator: Kazuaki

• Publisher: AlphaPolis (Japan)

Manga Adaptation:

• Illustrator: Aki Tsujimoto

Light Anime Production:

• Director: Yusuke Morishita

• Animation Studio: Imagica Infos／Imageworks Studio

• Series Composition: Izumi Tezuka

The Story

The series follows a young man who reincarnates as Alba, the son of an impoverished aristocratic family and a supporting character in his favorite otome game. Alba is infatuated with Orsis, his new step-brother by marriage, until he remembers that he himself is destined to die tragically as part of Orsis's character development. Armed with this knowledge, Alba is determined to dodge the death flags so he can continue to dote on the object of his affection.

Broadcast Information

Premiere: January 6, 2026

Are you excited for the premiere? What do you think of Shouta Aoi's dual role? Which new cast member are you most interested in? Do you enjoy BL isekai series? Share your thoughts in the comments below!