Japanese manga series
The Ramparts of Ice First
tankōbon volume cover, featuring Koyuki Hikawa
氷の城壁 (Koori no Jyōheki )Manga Written by Kōcha Agasawa [ja ] Published by Imprint Jump Comics Original run January 10, 2020 –April 28, 2022 Volumes 14 Anime television series Directed by Mankyū Written by Yasuhiro Nakanishi Music by Kanade Sakuma Natsumi Tabuchi Studio Studio Kai Licensed by Netflix (streaming)Original network JNN (TBS )Original run April 2, 2026 – scheduled Anime and manga portal
The Ramparts of Ice (Japanese :氷の城壁 ,Hepburn :Koori no Jyōheki ) is a Japaneseweb manga series written and illustrated byKōcha Agasawa [ja ] . Starting as awebtoon ,[ 1] it was later serialized throughLine 'sLine Manga digital service from January 2020 to April 2022. Shueisha published it in 14tankōbon volumes from July 2023 to February 2025. Ananime television series adaptation produced byStudio Kai is set to premiere in April 2026.
Koyuki Hikawa has trouble interacting with others, instead preferring to keep her distance and spend her time alone. However, when she meets Minato Amamiya, he suddenly starts trying to close the distance between them.
Koyuki Hikawa (氷川 小雪 ,Hikawa Koyuki ) Voiced by:Anna Nagase [ 2] Miki Azumi (安曇 美姫 ,Azumi Miki ) Voiced by:Fūka Izumi [ 2] Minato Amamiya (雨宮 湊 ,Amamiya Minato ) Voiced by:Shōya Chiba [ 2] Yota Hino (日野 陽太 ,Hino Yōta ) Voiced by:Satoshi Inomata [ja ] [ 2] Tsubasa Igarashi (五十嵐 翼 ,Igarashi Tsubasa ) Voiced by:Chiaki Kobayashi [ 3] Kōcha Agasawa [ja ] startedThe Ramparts of Ice as aself-published webtoon [ 1] for about two years before starting a serialization throughLine 'sLine Manga digital service from January 10, 2020, to April 28, 2022.[ 4] [ 5] Shueisha published the manga in print, under itsJump Comics imprint, with 14tankōbon volumes released from July 4, 2023, to February 4, 2025.[ 6] [ 7] [ 8]
No. Japanese release date Japanese ISBN 1 July 4, 2023[ 9] 978-4-08-883544-0 2 July 4, 2023[ 9] 978-4-08-883582-2 3 August 4, 2023[ 10] 978-4-08-883583-9 4 September 4, 2023[ 11] 978-4-08-883648-5 5 October 4, 2023[ 12] 978-4-08-883649-2 6 November 2, 2023[ 13] 978-4-08-883650-8 7 December 4, 2023[ 14] 978-4-08-883750-5 8 January 4, 2024[ 15] 978-4-08-883751-2 9 February 2, 2024[ 16] 978-4-08-883752-9 10 March 4, 2024[ 17] 978-4-08-883753-6 11 May 2, 2024[ 18] 978-4-08-883754-3 12 July 4, 2024[ 19] 978-4-08-883755-0 13 September 4, 2024[ 20] 978-4-08-884198-4 14 February 4, 2025[ 8] 978-4-08-884404-6
In January 2025, it was announced that the manga will receive ananime television series adaptation.[ 21] [ 22] It will be produced byStudio Kai and directed by Mankyū, with series composition by Yasuhiro Nakanishi, characters designed by Miki Ogino, and music composed by Kanade Sakuma and Natsumi Tabuchi. The series is set to premiere on April 2, 2026, onTBS and its affiliates.[ 2] [ 23] Netflix will stream the series globally.[ 23]
Before its serialization,The Ramparts of Ice received a special prize at the "Shueisha Shōjo Manga Grand Prix Powered by Line Manga Indies 2018 Summer".[ 24] It ranked nineteenth in the web category at the seventhNext Manga Awards in 2021.[ 25] It ranked first in the Comic C'moa Annual Ranking'sjosei manga category in 2022.[ 26] It ranked second inAnimeJapan 's sixth "Most Wanted Anime Adaptation" poll in 2023.[ 27] It was nominated for the 69thShogakukan Manga Award in 2023.[ 28] [ a] It ranked fifteenth, along withThe JoJoLands , onTakarajimasha 'sKono Manga ga Sugoi! list of best manga of 2024 for male readers.[ 29] It was ranked sixth in the Nationwide Bookstore Employees Recommended Comics of 2024 list.[ 30] The series won the 2024 Vertical Manga Award in the completed comic category.[ 31]
^ Unlike previous years, the nominees are not divided into categories in the 2023 award. ^a b Ishida, Kanta (November 18, 2023)." 'The Ramparts of Ice' Is a Game Changer of Webtoon-Origin Manga" .The Japan News .Yomiuri Shimbun .Archived from the original on December 15, 2023. RetrievedDecember 15, 2023 . ^a b c d e Pineda, Rafael Antonio (September 28, 2025)."The Ramparts of Ice TV Anime's Teaser Unveils Cast, Staff, April 2026 Debut" .Anime News Network .Archived from the original on September 29, 2025. RetrievedSeptember 29, 2025 . ^ Mateo, Alex (February 4, 2026)."The Ramparts of Ice Anime Casts Chiaki Kobayashi" .Anime News Network .Archived from the original on February 4, 2026. RetrievedFebruary 4, 2026 . ^ Agasawa, Kōcha [@agasawa_tea] (January 10, 2020).2年程前から WEB漫画をマイペースに更新していたのですが、この度 LINEマンガさんの方で公式連載にして頂けることになりました。 本日1/10より【毎週金曜】更新です。 https://manga.line.me/product/periodic?id=699129&t=1578582799793… 全話無料で読めますので、お時間余裕ございましたら是非 m(_ _)m どうぞよろしくお願いします〜 (Tweet ) (in Japanese). RetrievedDecember 15, 2023 – viaTwitter . ^ Agasawa, Kōcha [@agasawa_tea] (April 28, 2022).日付変わりまして 本日金曜日、 氷の城壁❄️🏰 最終話 更新されました…! #LINEマンガ https://manga.line.me/product/periodic?id=699129… 全117話(LINEマンガの表記だと130話)、ご愛読ありがとうございました🥲🥹✨ さ、寂しい〜ーーッ (Tweet ) (in Japanese). RetrievedDecember 15, 2023 – viaTwitter . ^ 全巻リスト (in Japanese).Shueisha .Archived from the original on December 16, 2025. RetrievedDecember 15, 2025 .^ LINEマンガ発、"アニメ化してほしい"という声も多数のwebtoon「氷の城壁」単行本化 .Comic Natalie (in Japanese). Natasha, Inc. July 4, 2023.Archived from the original on July 12, 2023. RetrievedDecember 15, 2023 .^a b 【2月4日付】本日発売の単行本リスト .Comic Natalie (in Japanese). Natasha, Inc. February 4, 2025.Archived from the original on February 3, 2025. RetrievedFebruary 3, 2025 .^a b 【7月4日付】本日発売の単行本リスト .Comic Natalie (in Japanese). Natasha, Inc. February 19, 2018.Archived from the original on July 12, 2023. RetrievedDecember 15, 2023 .^ 【8月4日付】本日発売の単行本リスト .Comic Natalie (in Japanese). Natasha, Inc. August 4, 2023.Archived from the original on August 4, 2023. RetrievedDecember 15, 2023 .^ 【9月4日付】本日発売の単行本リスト .Comic Natalie (in Japanese). Natasha, Inc. September 4, 2023.Archived from the original on September 26, 2023. RetrievedDecember 15, 2023 .^ 【10月4日付】本日発売の単行本リスト .Comic Natalie (in Japanese). Natasha, Inc. October 4, 2023.Archived from the original on October 11, 2023. RetrievedDecember 15, 2023 .^ 【11月2日付】本日発売の単行本リスト .Comic Natalie (in Japanese). Natasha, Inc. November 2, 2023.Archived from the original on November 5, 2023. RetrievedDecember 15, 2023 .^ 【12月4日付】本日発売の単行本リスト .Comic Natalie (in Japanese). Natasha, Inc. December 4, 2023.Archived from the original on December 4, 2023. RetrievedDecember 15, 2023 .^ 【1月4日付】本日発売の単行本リスト .Comic Natalie (in Japanese). Natasha, Inc. January 4, 2024.Archived from the original on January 15, 2024. RetrievedJanuary 17, 2024 .^ 【2月2日付】本日発売の単行本リスト .Comic Natalie (in Japanese). Natasha, Inc. February 2, 2024.Archived from the original on February 3, 2024. RetrievedFebruary 11, 2024 .^ 【3月4日付】本日発売の単行本リスト .Comic Natalie (in Japanese). Natasha, Inc. March 4, 2024. RetrievedMarch 20, 2024 .^ 【5月2日付】本日発売の単行本リスト .Comic Natalie (in Japanese). Natasha, Inc. May 2, 2024.Archived from the original on May 1, 2024. RetrievedMay 17, 2024 .^ 【7月4日付】本日発売の単行本リスト .Comic Natalie (in Japanese). Natasha, Inc. July 4, 2024.Archived from the original on July 5, 2024. RetrievedJuly 16, 2024 .^ 【9月4日付】本日発売の単行本リスト .Comic Natalie (in Japanese). Natasha, Inc. September 4, 2024.Archived from the original on September 3, 2024. RetrievedOctober 9, 2024 .^ 阿賀沢紅茶「氷の城壁」TVアニメ化!描き下ろしイラストで小雪たちもお祝い .Comic Natalie (in Japanese). Natasha, Inc. January 31, 2025.Archived from the original on January 31, 2025. RetrievedJanuary 31, 2025 .^ Hodgkins, Crystalyn (January 31, 2025)."Kōcha Agasawa's The Ramparts of Ice Manga Gets TV Anime" .Anime News Network .Archived from the original on January 31, 2025. RetrievedJanuary 31, 2025 . ^a b Hodgkins, Crystalyn (January 9, 2026)."The Ramparts of Ice Anime Reveals April 2 Debut on Netflix in English-Subtitled Video" .Anime News Network .Archived from the original on January 10, 2026. RetrievedJanuary 10, 2026 . ^ 「LINEマンガ インディーズ」が着実に成長している理由って?注目作のレビューも .Comic Natalie (in Japanese). Natasha, Inc. May 9, 2023.Archived from the original on June 2, 2023. RetrievedDecember 15, 2023 .^ Loveridge, Lynzee (August 24, 2021)."Kaiju No. 8, Oshi no Ko Win Next Manga Awards Web, Print Categories" .Anime News Network .Archived from the original on August 24, 2021. RetrievedAugust 20, 2024 . ^ 2022年一番売れたマンガは!?「コミックシーモア 年間ランキング2022」を発表!!~ランキング作品20%ポイント還元キャンペーン開催中~ (Press release) (in Japanese).NTT Solmare Corporation [ja ] . December 9, 2022.Archived from the original on December 13, 2022. RetrievedDecember 15, 2023 – viaPR Times .^ Morrissy, Kim (March 23, 2023)."Hyperinflation Tops AnimeJapan's 'Manga We Want To See Animated' Poll" .Anime News Network .Archived from the original on March 23, 2023. RetrievedDecember 16, 2023 . ^ Hodgkins, Crystalyn (December 7, 2023)."12 Works Including Frieren, Elusive Samurai, Ya Boy Kongming! Nominated for 69th Shogakukan Manga Awards" .Anime News Network .Archived from the original on December 7, 2023. RetrievedDecember 15, 2023 . ^ Pineda, Rafael; Cayanan, Joanna (December 13, 2023)."Kono Manga ga Sugoi! Editors Unveil 2024 Rankings (Updated)" .Anime News Network .Archived from the original on December 13, 2023. RetrievedDecember 15, 2023 . ^ 橘オレコ「ホタルの嫁入り」が全国書店員が選んだおすすめコミック2024の第1位に .Comic Natalie (in Japanese). Natasha, Inc. February 1, 2024.Archived from the original on February 3, 2024. RetrievedFebruary 4, 2024 .^ 「タテ読みマンガアワード 2024」結果発表!伊織もえ&BE:FIRST・SHUNTOも選ぶ .Comic Natalie (in Japanese). Natasha, Inc. February 20, 2025.Archived from the original on February 20, 2025. RetrievedJanuary 20, 2026 .
First published in Korean First published in English First published in Indonesian First published in Japanese Adaptations
Television series Films ONAs OVAs
Ended series
First released 2013–2015 First released 2016 First released 2017 First released 2018 First released 2019 First released 2020 First released 2021 First released 2022 First released 2023 First released 2024 First released 2025
Current and upcoming series
Films and specials
Original released films Other released films Interactive Upcoming