
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.
Cast: Anna Nagase, Fuka Izumi, Shoya Chiba
TV-PGUHDHDCC
Season 1
28 episodes
1. Lines and WallsAfter 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.TV-PGCC24minApr 2, 2026
2. LocksmithTo Koyuki's relief, Yota comes to her rescue. After their initial study session, they grow more comfortable with each other — which unsettles Minato.TV-PGCC24minApr 9, 2026
3. 3+(←)1Bothered 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.TV-PGCC24minApr 16, 2026
4. ImpenetrableAt Miki's prodding, Minato clarifies his interest in her best friend. An unexpected visitor triggers Koyuki's bad memories, leading to a harsh outburst.TV-PGCC24minApr 23, 2026
5. ChangeKoyuki 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.TV-PGCC24minApr 30, 2026
6. New SemesterAs winter break ends, the usually calm Minato begins to realize his feelings are changing. Miki notices how close Yota and Koyuki have become.TV-PGCC24minMay 7, 2026
7. Loneliness and SolitudeAfter reflecting on her own loneliness and worrying that Yota is bottling everything up, Koyuki reaches out and asks about his true feelings.TV-PGCC24minMay 14, 2026
8. On Equal FootingDetermined 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.TV-PGCC24minMay 21, 2026
9. Self-AwarenessMinato realizes how Koyuki is always on his mind. Later, while hanging out at the new mall, the misunderstanding between the four friends deepens.TV-PGCC24minMay 28, 2026
10. SpringA 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.TV-PGCC24minJun 4, 2026
11. InversionKoyuki broods over her complicated past with Akine's sister, Manatsu, and what the first year might know. Meanwhile, Momoka sets her sights on Minato.TV-PGCC24minJun 11, 2026
12. ThunderAs 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.TV-PGCC24minJun 18, 2026
13. PerceptionWith Akine's words ringing in her head, Koyuki's feelings become complicated. Later, an accident causes something to shift between Miki and Yota.TV-PGCC24minJun 25, 2026
14. BombshellUnsure of how to move forward, Miki avoids Yota and confides in her colleagues. A bold Momoka confronts Koyuki about Minato and lights a fuse.TV-PGCC24minJul 2, 2026
15. Clouds and RainGray 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.TV-PGCC24minOct 1, 2026
16. Stop and GoCultural 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.TV-PGCC24minOct 8, 2026
17. True FeelingsReeling from the news that Minato and Momoka are dating, Koyuki fights to keep her composure. Miki, meanwhile, confronts Minato about his true intentions.TV-PGCC24minOct 15, 2026
18. ReliefIn 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.TV-PGCC24minOct 22, 2026
19. TransitionMiki 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.TV-PGCC24minOct 29, 2026
20. Cultural FestivalSummer'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.TV-PGCC24minNov 5, 2026- 21. Episode 21No synopsis available yet.TV-PGCCNov 12, 2026
- 22. Episode 22No synopsis available yet.TV-PGCCNov 19, 2026
- 23. Episode 23No synopsis available yet.TV-PGCCNov 26, 2026
- 24. Episode 24No synopsis available yet.TV-PGCCDec 3, 2026
- 25. Episode 25No synopsis available yet.TV-PGCCDec 10, 2026
- 26. Episode 26No synopsis available yet.TV-PGCCDec 17, 2026
- 27. Episode 27No synopsis available yet.TV-PGCCDec 24, 2026
- 28. Episode 28No synopsis available yet.TV-PGCCDec 31, 2026
The Ramparts of Ice
★ 8.6/1020261 season28 episodesReturning Series
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.
Creators and cast
- Created by
- Wataru Hatakeyama, Nobuhiko Kakihara, Rika Tsurusaki, Yoko Shiraishi
- Studio
- Studio KAI, TBS, Universal Music Japan
Maturity rating
TV-PGCheck the rating before watching with younger viewers.
Audio languages
Japanese

































