The Ramparts of Ice

The Ramparts of Ice

The Ramparts of Ice (Japanese: 氷の城壁, Hepburn: Koori no Jyōheki) is a Japanese web manga series written and illustrated by Kōcha Agasawa. First published as a webtoon, it was later serialized through Line's Line Manga digital service from January 2020 to April 2022. Shueisha published its chapters in 14 tankōbon volumes from July 2023 to February 2025. An anime television series adaptation produced by Studio Kai is set to premiere in April 2026.

Synopsis

The Ramparts of Ice

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.

Characters

The Ramparts of Ice

Koyuki Hikawa (氷川 小雪, Hikawa Koyuki): Voiced by: Anna Nagase Miki Azumi (安曇 美姫, Azumi Miki): Voiced by: Fūka Izumi Minato Amamiya (雨宮 湊, Amamiya Minato): Voiced by: Shōya Chiba Yota Hino (日野 陽太, Hino Yōta): Voiced by: Satoshi Inomata Tsubasa Igarashi (五十嵐 翼, Igarashi Tsubasa): Voiced by: Chiaki Kobayashi Tsukiko Shimojima (霜島月子, Shimojima Tsukiko): Voiced by: Sakura Shinfuku Momoka Kuriki (栗木桃香, Kuriki Momoka): Voiced by: Akari Kitō Yūki Azumi (安曇優希, Azumi Yūki): Voiced by: Kakeru Hatano Akine Atagawa (熱川秋音, Atagawa Akine): Voiced by: Natsumi Kawaida

Media

Manga

Kōcha Agasawa began publishing The Ramparts of Ice as a self-published webtoon for about two years, before being serialized through Line's Line Manga digital service from January 10, 2020, to April 28, 2022. Shueisha published the manga in print, under its Jump Comics imprint, with 14 tankōbon volumes released from July 4, 2023, to February 4, 2025.

The series is published in English on NTT Solmare's MangaPlaza website.

Volumes

No.	Japanese release date	Japanese ISBN
1	July 4, 2023	978-4-08-883544-0
2	July 4, 2023	978-4-08-883582-2
3	August 4, 2023	978-4-08-883583-9
4	September 4, 2023	978-4-08-883648-5
5	October 4, 2023	978-4-08-883649-2
6	November 2, 2023	978-4-08-883650-8
7	December 4, 2023	978-4-08-883750-5
8	January 4, 2024	978-4-08-883751-2
9	February 2, 2024	978-4-08-883752-9
10	March 4, 2024	978-4-08-883753-6
11	May 2, 2024	978-4-08-883754-3
12	July 4, 2024	978-4-08-883755-0
13	September 4, 2024	978-4-08-884198-4
14	February 4, 2025	978-4-08-884404-6

Anime

In January 2025, it was announced that the manga will receive an anime television series adaptation. It will be produced by Studio 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, on TBS and its affiliates. The opening theme song is "Tōmei" (透明; 'Invisible'), performed by Novelbright, while the ending theme song is "Sakasama" (逆様; 'Upside Down'), performed by Polkadot Stingray. Netflix will stream the series globally.

Episodes

<table><thead><tr><th>No.</th><th>Title</th><th>Directed by</th><th>Written by</th><th>Storyboarded by</th><th>Original release date</th></tr></thead><tbody><tr><td>1</td><td>Transliteration: "Sen to Kabe" (Japanese: 線と壁)</td><td>TBA</td><td>TBA</td><td>TBA</td><td>April 2, 2026 (2026-04-02)</td></tr></tbody></table>

Reception

The Ramparts of Ice

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". It ranked nineteenth in the web category at the seventh Next Manga Awards in 2021. It ranked first in the Comic C'moa Annual Ranking's josei manga category in 2022. It ranked second in AnimeJapan's sixth "Most Wanted Anime Adaptation" poll in 2023. It was nominated for the 69th Shogakukan Manga Award in 2023. It ranked fifteenth, along with The JoJoLands, on Takarajimasha's Kono Manga ga Sugoi! list of best manga of 2024 for male readers. It was ranked sixth in the Nationwide Bookstore Employees Recommended Comics of 2024 list. The series won the 2024 Vertical Manga Award in the completed comic category.