Twomore voice cast membersare joining the cast of the ongoingRed RiverTV anime series. The anime began airing in Japan on July 7, 2026, with its official X/Twitter account confirming a second cour that will broadcast on September 29, 2026.
The new cast members includeSoma Saitoas User Ramses andShun Horieas Juda Haspasrupi. Saito is voicing Julius Roias inThe Duke’s Son Claims He Won’t Love Me yet Showers Me with Adoration. Horie recently voiced Dotta Luzulas inSentenced to be a Hero.
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© 篠原千絵／小学館／アニメ「天は赤い河のほとり」製作委員会 -
© 篠原千絵／小学館／アニメ「天は赤い河のほとり」製作委員会
They join the anime’s voice cast, which include:
- •Mirai Tachibanaas Yuri
- •Wataru Katoas Kail
- •Aya Uchidaas Queen Nakia
- •Shoya Chibaas Zannanza Hattusili
- •Tomoaki Maenoas Ilbani
- •Koji Yusaas Urhi
- •Kosuke Toriumias Prince Mattiwaza
Kosuke Kobayashi(Waccha PriMagi!, The Master of Ragnarök & Blesser of Einherjar) is directing the anime series, withYoriko Tomita(My Dress-Up Darling) as series composer andKenji Fujisakias character designer. Middle Eastern Culture Centre in Japan’sKimiyoshi MatsumuraandDaisuke Yoshidaare credited with the show’s historical research.Tatsunoko Productionis handling the animation production.
Crunchyroll isstreaming the anime adaptationin select countries and territories worldwide.
The original manga series byChie Sonoharadebuted in Shogakukan’s Shojo Comic magazine on January 5, 1995 and ended on June 5, 2002. A total of 28 tankobon volumes were released in Japan.
VIZ Media licensed theRed Rivermanga for English release, describing the synopsis as:
Yuri, a pretty Japanese girl, is ecstatic after passing her college entrance exam and having her first kiss with her childhood friend-turned boyfriend. However, her luck soon changes. She starts to notice that water becomes agitated whenever she goes near it. One night, hands appear out of a puddle on the street and drag her into the water! Transported to an ancient village in the Middle East, she is then captured by armed troops and taken to the Queen’s palace for a human sacrifice.
