The Ramparts of Ice

氷の城壁

2026– · Ongoing · 1 season · 28 episodes · Animation, Drama · Japan

Channel MBS · Starring Anna Nagase, Fuka Izumi, Shoya Chiba

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.
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Where to watch

Netflix

Episodes

28 episodes · April 2026 – December 2026
  1. Episode 1: 1. Lines and WallsApril 2, 2026 · 24 min
    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.
  2. Episode 2: 2. LocksmithApril 9, 2026 · 24 min
    To Koyuki's relief, Yota comes to her rescue. After their initial study session, they grow more comfortable with each other — which unsettles Minato.
  3. Episode 3: 3. 3+(←)1April 16, 2026 · 24 min
    Bothered that Koyuki still has her guard up around him, Minato tries to make small talk. As Miki grows suspicious of his intentions, she confronts him.
  4. Episode 4: 4. ImpenetrableApril 23, 2026 · 24 min
    At Miki's prodding, Minato clarifies his interest in her best friend. An unexpected visitor triggers Koyuki's bad memories, leading to a harsh outburst.
  5. Episode 5: 5. ChangeApril 30, 2026 · 24 min
    Koyuki mulls over the tense exchange in the infirmary. After Yota clears the air, she tries to have an honest conversation with Minato for the first time.
  6. Episode 6: 6. New SemesterMay 7, 2026 · 24 min
    As winter break ends, the usually calm Minato begins to realize his feelings are changing. Miki notices how close Yota and Koyuki have become.
Show 22 more episodes
  1. Episode 7: 7. Loneliness and SolitudeMay 14, 2026 · 24 min
    After reflecting on her own loneliness and worrying that Yota is bottling everything up, Koyuki reaches out and asks about his true feelings.
  2. Episode 8: 8. On Equal FootingMay 21, 2026 · 24 min
    Determined not to mess up high school, Miki has faked her persona since day one. But not being herself around her classmates starts to wear her down.
  3. Episode 9: 9. Self-AwarenessMay 28, 2026 · 24 min
    Minato realizes how Koyuki is always on his mind. Later, while hanging out at the new mall, the misunderstanding between the four friends deepens.
  4. Episode 10: 10. SpringJune 4, 2026 · 24 min
    A spring break trip to the amusement park brings the four friends closer. Back at school, Koyuki's surprised by a familiar face — and Minato takes notice.
  5. Episode 11: 11. InversionJune 11, 2026 · 24 min
    Koyuki broods over her complicated past with Akine's sister, Manatsu, and what the first year might know. Meanwhile, Momoka sets her sights on Minato.
  6. Episode 12: 12. ThunderJune 18, 2026 · 24 min
    As Koyuki slowly notices her new, surprising feelings towards Minato, first-year Momoka suddenly tries to cozy up to her — for reasons she can't grasp.
  7. Episode 13: 13. PerceptionJune 25, 2026 · 24 min
    With Akine's words ringing in her head, Koyuki's feelings become complicated. Later, an accident causes something to shift between Miki and Yota.
  8. Episode 14: 14. BombshellJuly 2, 2026 · 24 min
    Unsure of how to move forward, Miki avoids Yota and confides in her colleagues. A bold Momoka confronts Koyuki about Minato and lights a fuse.
  9. Episode 15: 15. Clouds and RainOctober 1, 2026 · 24 min
    Gray skies mirror the group's uneasy mood. Momoka senses a chance to get closer to Minato, while Miki can barely face Yota after turning him down.
  10. Episode 16: 16. Stop and GoOctober 8, 2026 · 24 min
    Cultural festival prep begins and Miki and Yota ease back to normal. But as Minato grapples with his desire to stay close to Koyuki, Momoka makes a move.
  11. Episode 17: 17. True FeelingsOctober 15, 2026 · 24 min
    Reeling from the news that Minato and Momoka are dating, Koyuki fights to keep her composure. Miki, meanwhile, confronts Minato about his true intentions.
  12. Episode 18: 18. ReliefOctober 22, 2026 · 24 min
    In agony over Minato, Koyuki confides in Tsukiko — who sees what Koyuki refuses to. Then a run-in with Igarashi forces her to reflect on her own walls.
  13. Episode 19: 19. TransitionOctober 29, 2026 · 24 min
    Miki watches the group joke around at the bowling alley, amazed by how normal it all seems. Beneath the surface, though, no one's feelings are the same.
  14. Episode 20: 20. Cultural FestivalNovember 5, 2026 · 24 min
    Summer's over and Class 2-2 takes the stage for the cultural festival. But while everyone else celebrates, Minato slowly realizes that something is off.
  15. Episode 21: Episode 21November 12, 2026
  16. Episode 22: Episode 22November 19, 2026
  17. Episode 23: Episode 23November 26, 2026
  18. Episode 24: Episode 24December 3, 2026
  19. Episode 25: Episode 25December 10, 2026
  20. Episode 26: Episode 26December 17, 2026
  21. Episode 27: Episode 27December 24, 2026
  22. Episode 28: Episode 28December 31, 2026

Trailers and images

Credits

Film and series details

EPISODE LENGTH
24 minutes
FIRST AIRED
April 2, 2026
NEXT EPISODE
November 12, 2026
PRODUCTION COMPANIES
Studio KAI, TBS, Universal Music Japan

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