The Ramparts of Ice backdrop
The Ramparts of Ice S1E12 — Thunder
7.8
The Ramparts of Ice•Season 1•Episode 12

Thunder

7.8/10 · 5 votesJun 18, 202624 min

Ranked #8 of 18 in Season 1•+0.1 vs season avg

Discussion

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.

Directed byTeru Ishii, Takumi Yokoyama, Minagi Koga
Written byKei Shimobayashi
Previous episodeE11 · InversionNext episodeE13 · Perception
BestEpisodes
WorstEpisodes
BestSeasons
AllEpisodes

Seasons1

All1

Season 1 Episodes18

Lines and Walls stillE1 7.5

Lines and Walls

Locksmith stillE2 8.0

Locksmith

3+(←)1 stillE3 7.0

3+(←)1

Impenetrable stillE4 7.0

Impenetrable

Change stillE5 7.2

Change

New Semester stillE6 7.2

New Semester

Loneliness and Solitude stillE7 8.0

Loneliness and Solitude

On Equal Footing stillE8 7.6

On Equal Footing

Self-Awareness stillE9 8.0

Self-Awareness

Spring stillE10 8.4

Spring

Inversion stillE11 8.2

Inversion

Thunder stillE12 7.8Now viewing

Thunder

Perception stillE13 7.6

Perception

Bombshell stillE14 8.8

Bombshell

Clouds and Rain stillE15 8.0

Clouds and Rain

Stop and Go stillE16 7.0

Stop and Go

True Feelings stillE17 7.0

True Feelings

Relief stillE18 7.5

Relief

Cast4

Anna Nagase

Anna Nagase

Koyuki Hikawa (voice)

Fuka Izumi

Fuka Izumi

Miki Azumi (voice)

Shoya Chiba

Shoya Chiba

Minato Amamiya (voice)

Satoshi Inomata

Satoshi Inomata

Yota Hino (voice)

Crew12

T

Teru Ishii

Director

M

Miki Ogino

Supervising Animation Director

S

Shotaro Oba

Production Assistant

K

Keisuke Nozawa

Compositing Artist

M

Mako Mikami

Compositing Artist

M

Maho Kuwata

Compositing Artist

R

Ryuya Kezuka

Compositing Artist

Z

Zhang Xiaobei

Supervising Animation Director

R

Riri Egashira

Special Effects

M

Mika Narukawa

Special Effects

T

Thanh Ngoc Nguyen

Background Designer

N

Nhat Quang

Background Designer

Discussion

0 comments

Join the conversation

Share your take and reply to other fans.

No comments yet

Be the first to share your thoughts on this episode.

Episode Summary

"Thunder" is episode 12 of The Ramparts of Ice season 1. It scored 7.8/10 from 5 votes, ranking #8 of 18 episodes this season (season average 7.7). Directed by Teru Ishii, Takumi Yokoyama, Minagi Koga and written by Kei Shimobayashi, it aired on June 18, 2026.

Next: E13 · PerceptionBest of Season 1