Anime · RKK
The Ramparts of Ice
Who's in it
Cast
The principal ensemble across the run of the series.
Anna Nagase
Koyuki Hikawa (voice)
15 eps
Fuka Izumi
Miki Azumi (voice)
15 eps
Shoya Chiba
Minato Amamiya (voice)
15 eps
Satoshi Inomata
Yota Hino (voice)
15 eps
Sakura Shinfuku
Tsukiko Shimojima (voice)
7 eps
Chiaki Kobayashi
Tsubasa Igarashi (voice)
7 eps
Akari Kito
Momoka Kuriki (voice)
5 eps
Kakeru Hatano
Yuki Azumi (voice)
5 eps
Natsumi Kawaida
Akine Atagawa (voice)
5 eps
Gakuto Kajiwara
Daichi Midorikawa (voice)
8 eps
Hazuki Ogino
Manatsu Atagawa (voice)
6 eps
Manatsu Murakami
Muko (voice)
4 eps
Saeko Kamijo
Mari (voice)
7 eps
Rikuya Yasuda
Hayato Akahoshi (voice)
11 eps
Toa Yukinari
Suwa-sensei (voice)
3 eps
Atsushi Kosaka
Matsumoto-sensei (voice)
2 eps
Masashi Yamane
Takeuchi-sensei (voice)
1 eps
Hitomi Shogawa
Koyuki's Mother (voice)
2 eps
Mitsuho Kambe
Mei (voice)
6 eps
Makoto Tamura
Minato's Father (voice)
1 eps
Aya Endo
Yota's Mother (voice)
2 eps
Masamichi Kitada
Yota's Father (voice)
1 eps
Hibiku Yamamura
Nagisa Amamiya (voice)
3 eps
Toshiki Watanabe
Tanaka's Friend (voice)
6 eps
Kentaro Kumagai
Kaito Amamiya (voice)
2 eps
Minori Fujidera
Female Student (voice)
6 eps
Miria Takagishi
Miharu (voice)
6 eps
Hiromu Mineta
Ginnosuke Kaneda (voice)
8 eps
Satoru Ito
Middle School Boy (voice)
1 eps
Wakana Kowaka
Noriko-sensei (voice)
8 eps
Kento Shiraishi
Tanaka (voice)
8 eps
Riko Akechi
Female Student (voice)
3 eps
Yuriko Hibi
Middle School Volleyball Club Member (voice)
5 eps
Yuka Yagami
Middle School Volleyball Club Member (voice)
6 eps
Masato Niwa
Male Student (voice)
6 eps
Masaya Fukunishi
Male Fast Food Restaurant Employee (voice)
2 eps
Akio Otsuka
Uppi (voice)
1 eps
The Nutevio profile
TV DNA
How The Ramparts of Ice actually feels to watch, measured on the traits our editors track across every series.
Signature profile
The Ramparts of Ice reads strongest on Character Depth, Bingeability and Emotional Weight.
How fully written and psychologically layered the ensemble is.
How hard it is to stop after one episode.
How much the series is designed to affect you.
How much each hour depends on the one before it.
Visual ambition — scale, craft and set-piece filmmaking.
The scale, internal logic and texture of the world.
How often an episode ends on a hook you can't ignore.
The sustained pressure the series keeps you under.
How often the series is genuinely funny, by design.
The story
What it's about
Weighed 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.
Where the series peaks
Best Episodes
The hours that define the show, ranked by audience response and editorial signal.
S01E01 · Signature episode
Lines and Walls
After her classmates run off in fear, Koyuki makes faces in a mirror to figure out why everyone finds her scary. Suddenly, a boy sneaks up behind her.
- Directed by Teru Ishii
- Written by Yasuhiro Nakanishi
Recently aired
Latest Episodes
S01E12
Thunder
- Directed by Takumi Yokoyama, Teru Ishii
- Written by Kei Shimobayashi
S01E11
Inversion
- Directed by Miichiro Kamenosono
- Written by Yasuhiro Nakanishi
S01E09
Self-Awareness
- Directed by Shigatsu Yoshikawa
- Written by Yasuhiro Nakanishi
Behind the series
Created by
Showrunners, creators, executive producers and the writers who set the voice of the series.
The craft
Key Crew
Directing, writing, production, camera, music and editing.
Executive production
- Yoko ShiraishiProducer
- Nobuya NakazawaProducer
- Rika TsurusakiExecutive Producer
- Nobuhiko KakiharaExecutive Producer
- Wataru HatakeyamaExecutive Producer
- Shinya IshiharaProducer
Writing
- Yasuhiro NakanishiWriter
- Yuta SuzukiWriter
- Yu OshikaWriter
- Kei ShimobayashiWriter
Direction
- Miichiro KamenosonoDirector
- Takumi YokoyamaDirector
- Shigatsu YoshikawaDirector
- Aya KobayashiDirector
- Teru IshiiDirector
- Mamoru EnomotoDirector
Cinematography
- Mika WatanabeDirector of Photography
Music
- Natsumi TabuchiOriginal Music Composer
- Kanade SakumaOriginal Music Composer
Where to watch
Streaming
Availability verified against regional listings.
- NetflixStreaming
- Netflix Standard with AdsStreaming
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