The official website for the television anime adaptation of Koucha Agasawa's Koori no Jouheki (The Ramparts of Ice) web manga revealed the main cast, staff, teaser visual (pictured), and a teaser promotional video on Monday. The anime is scheduled to premiere on TBS and other stations in April 2026.

Cast
Koyuki Hikawa: Anna Nagase (Zenshuu.)
Miki Azumi: Fuuka Izumi (Shikanoko Nokonoko Koshitantan)
Minato Amamiya: Shouya Chiba (Youkoso Jitsuryoku Shijou Shugi no Kyoushitsu e)
Youta Hino: Satoshi Inomata (Ballpark de Tsukamaete!)

Staff
Director: Mankyuu (Koori Zokusei Danshi to Cool na Douryou Joshi)
Series Composition: Yasuhiro Nakanishi (Kaguya-sama wa Kokurasetai: Tensai-tachi no Renai Zunousen)
Character Design: Miki Ogino (SK∞ animation director)
Music: Kanade Sakuma (Rock wa Lady no Tashinami deshite), Natsumi Tabuchi (5-toubun no Hanayome)
Original Work Cooperation: Margaret Editorial Department
Studio: Studio KAI

Agasawa (Seihantai na Kimi to Boku) began drawing the romantic comedy manga as a self-published webtoon before beginning its serialization in the LINE Manga website from January 2020 to April 2022. Shueisha shipped the 14th and final volume on February 4.

Teaser PV


Source: Comic Natalie