The official website for the upcoming TV anime adaptation of Kocha Agasawa's romantic comedy web manga series The Ramparts of Ice released a teaser trailer and visual today. The site also confirmed that the anime is set to premiere in Japan in April 2026. The Ramparts of Ice Teaser Trailer Teaser visual The anime's four main voice cast members have been announced as below: Koyuki Hikawa voiced by by Anna Nagase (Ushio Kofune in Summer Time Rendering ) Miki Azumi voiced by Fuka Izumi (Meme Bashame in My Deer Friend Nokotan ) Minato Amamiya voiced by Shoya Chiba (Kiyotaka Ayanokoji in Classroom of the Elite ) Yota Hino voiced by Satoshi Inomata (Shugo Hoshikawa in Anyway, I'm Falling in Love with You. ) (from left) Miki Azumi, Koyuki Hikawa, Minato Amamiya, Yota Hino RELATED: The Ramparts of Ice Anime Adaptation Announced Mankyu ( THE iDOLM@STER SHINY COLORS , Pui Pui Molcar The Movie MOLMAX ) directs The Ramparts of Ice TV anime at Studio KAI. Yashihiro Nakanishi ( Mecha-Ude: Mechanical Arms ) serves as the series composition writer, Miki Ogino designs the anime characters, and Kanade Sakuma and Natsumi Tabuchi provides soundtrack music. The Ramparts of Ice , otherwise known in English as Ice Castle Wall , was first self-published as a webtoon before being serialized through the Line Manga app from January 2020 to April 2022, releasing 14 collected volumes printed by Shueisha. The series came second in AnimeJapan's "Manga We Want To See Animated Ranking" poll in 2023. The story follows a loner high school girl considered unapproachable due to her cold facial expressions and attitude, until she meets a boy who inexplicably tries to get close to her. When two more follow suit, their vexing but endearing youth unfolds. Source: "The Ramparts of Ice" anime official website 1 , 2 / X (formerly Twitter)
