The Ramparts of Ice (TV)

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Alternative title:
Koori no Jyōheki (Japanese)
Rompiendo el hielo (Spanish)
氷の城壁 (Japanese)
Genres: romance
Themes: coming of age
Plot Summary: Pushed down by memories she can’t shake, high schooler Koyuki Hikawa keeps everyone at arm's length. Until three schoolmates draw her out of her shell.
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Running time: 25 minutes
Vintage: 2026-04-02
Opening Theme:
"Tōmei" (透明) by Novelbright
Ending Theme:
"Sakasama" (逆様) by Polkadot Stingray
Official website:
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Japanese staff
Japanese cast
Director: Mankyū
Series Composition: Yasuhiro Nakanishi
Original creator: Agasawa Tea
Character Design: Miki Ogino
Art Director: Shin Maeda
3D Director: Naoya Sakayori
Sound Director: Kōhei Yoshida
Director of Photography: Mika Watanabe

Animation producer: Taiki Itō
Art Setting: Shin Maeda
Assistant Director: Teru Ishii
Chief Animation Producer: Hirokazu Shiba
Color design: Haruko Nobori
Costume Design:
Kotono
Yū Fueki
Prop Design: Yūji Hamada
Sub-Character Design: Eriko Itō
Theme Song Arrangement:
Novelbright (OP)
Polkadot Stingray (ED)
Theme Song Composition:
Shizuku (ED)
Sōjirō Oki (OP)
Yūdai Takenaka (OP)
Theme Song Lyrics:
Shizuku (ED)
Yūdai Takenaka (OP)
Theme Song Performance:
Novelbright (OP)
Polkadot Stingray (ED)
Anna Nagase as Koyuki Hikawa
Fūka Izumi as Miki Azumi
Satoshi Inomata as Yōta Hino
Shōya Chiba as Minato Amamiya

Akari Kitō as Momoka Kuriki
Chiaki Kobayashi as Tsubasa Igarashi
Kakeru Hatano as Yūki Azumi
Natsumi Kawaida as Akine Atagawa
Sakura Shinfuku as Tsukiko Shimojima

Atsushi Kōsaka as Mr. Matsumoto (eps 3-4)
Aya Endō as Yota's Mother (ep 6)
Gakuto Kajiwara as Daichi Midorikawa (eps 2, 5-6)
Hazuki Ogino as
Fujita (ep 2)
Manatsu Atagawa (eps 1, 4)
Hibiku Yamamura as Nagisa Amamiya (eps 2, 6)
Hiromu Mineta as
Ginnosuke Kaneda (ep 1)
Junior High School Boy (ep 2)
Male Student (ep 3)
Nishi High School Student (ep 4)
Kentarō Kumagai as Kaito Amamiya (ep 6)
Kento Shiraishi as
Male Student (eps 3, 5)
Manager (eps 2, 6)
Tanaka (eps 1, 4)
Makoto Tamura as Minato's Father (ep 6)
Manatsu Murakami as Muko (eps 1, 4)
Masashi Yamane as Takeuchi-Sensei (ep 6)
Masato Niwa as
Male Student (eps 3, 5)
Nishi High School Student (ep 4)
Minori Fujidera as
Female Student (ep 1)
Minato's Ex-Girlfriend (ep 2)
Miria Takagishi as
Kirinoshima Junior High Volleyball Team (ep 3)
Miharu (eps 1, 5-6)
Mitsuho Kambe as Mei (eps 1, 3-4)
Rikuya Yasuda as Hayato Akahoshi (eps 1-2, 5-6)
Saeko Kamijō as
Mari (eps 1, 3-4)
Sora Amano (eps 2, 5-6)
Satoru Ito as Junior High School Boy (ep 2)
Toa Yukinari as Ms. Suwabe (eps 3-4)
Toshiki Watanabe as
Homeroom Teacher (ep 2)
Tanaka's Friend (ep 4)
Tatsu (ep 1)
Wakana Kowaka as
Female Employee (ep 6)
Ms. Noriko (eps 2, 4-5)
Yuka Yagami as
Kirinoshima Junior High Volleyball Team (eps 3, 5)
Saya-chan (ep 1)
Yuriko Hibi as
Boy (ep 1)
Kirinoshima Junior High Volleyball Team (eps 3, 5)
Japanese companies
2D Design: Graphinica
2nd Key Animation:
Hikari no Sono Animation (eps 1-2)
MKR Studio (ep 1)
Studio Angle (ep 1)
Studio μ (OP; ep 2)
TOHO animation STUDIO (ep 1)
Wit Studio (eps 1-2)
Animation Production: Studio KAI
Background Art:
Creative Freaks (OP)
GACHI Production (eps 1-2)
Suezō (eps 1-2)
Finish Animation:
Hikari no Sono Animation (eps 1-2)
Hiwa (eps 1-2)
Iris Media (ep 2)
Studio Gram (OP; ep 1)
Studio μ (OP; eps 1-2)
In-Between Animation:
Aura Studio (ep 1)
Hikari no Sono Animation (eps 1-2)
Iris Media (ep 2)
JFK (ep 1)
Studio Gram (OP; ep 1)
Studio KAI (ED)
Studio μ (OP; eps 1-2)
TOHO animation STUDIO (ED; ep 1)
Key Animation: Wit Studio (ep 2)
Monitor Graphics: Graphinica
Music Production: Nichion
Online Editing: qooop (eps 1-2)
Original Work Assistance: Shueisha (Margaret Editorial Dept.)
Photography: Graphinica Sapporo Studio (OP; ED; eps 1-2)
English cast
English staff
ADR Director: Kathy Pilon
ADR Script: Amanda C. Miller

ADR Editor: Pelin Takis
ADR Mix: Paul Zahnley
Casting Director: Kathy Pilon
Production Supervision: Diego Carvalho
Project Manager: Heather Becker
English companies
ADR Production: VSI Los Angeles
Internet Streaming: Netflix
French staff
French cast
ADR Director: Grégory Laisné

Adaptation: Orlane Berg
Dubbing Assistant: Victor Lenoir
Supervision: Alexandre Sassi
Alice Orsat as Miki Azumi
Estelle Darazi as Koyuki Hikawa
Maxime Baudoin as Minato Amamiya
Victor Niverd as Yōta Hino

Paul Bertin-Hugault as Tsubasa Igarashi

Anna Lauzeray-Gishi as L'ex petite amie de Minato
Jessie Lambotte as
Nagisa Amamiya
Noriko
Kylian Trouillard as Hayato Akahoshi

French companies
Dubbing: VSI Paris
Internet Streaming: Netflix
Italian staff
Italian cast
Dubbing Director: Simone Veltroni

Dialogues: Fabio Elia
Cecilia Salustri as Miki Azumi
Lorenzo Crisci as Yota Hino
Lucrezia Roma as Koyuki Hikawa
Riccardo Suarez as Minato Amamiya

Emanuele Suarez as Hayato Akahoshi
Stefano Broccoletti as Tsubasa Igarashi
Italian companies
Dubbing Studio: VSI Rome
Tagalog staff
Tagalog cast
(none)
Charmaine Cordoviz as Koyuki Hikawa
LEIA as Miki Azumi
Neil D. Caronan as Yota Hino
Steven Bontogon as Minato Amamiya

Mark Brecio as Tsubasa Igarashi

Alan Moya as
Hayato Akahoshi
Mr. Matsumoto
Tatsu
Alan James Moya as
Hayato Akahoshi
Mr. Matsumoto
Tatsu
Bea Uy as Mari
Cha Gojo as
Manatsu Atagawa
Ms. Noriko
Saya
Christopher Carlo Caling as
Ginnosuke Kaneda
Tanaka
Elle Genovata as
Mei
Ms. Suwa
Tagalog companies
(none)
Polish staff
Polish cast
Dubbing Director: Małgorzata Lalowska

Subtitle Translation: Kamil Rogula
Synchronisation: Jakub Truszkowski
Aleksander Bauman as Minato Amamiya
Krzysztof Rogucki as Yota Hino
Małgorzata Gradkowska as Koyuki Kikawa
Monika Pikuła as Miki Azumi

Oskar Stencel as Tanaka
Polish companies
Dubbing Studio: VSI Warsaw
Internet Streaming: Netflix
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