The Ramparts of Ice Episode 4 Release Date, Time, What to Expect & How to Watch

The icy exterior of Koyuki is beginning to thaw, and fans are collectively holding their breath for the next chapter of this poignant winter drama. As the anime adaptation of Agasawa Kocha’s beloved manga, The Ramparts of Ice (Kouri no Joumaku), continues its successful run, the stakes for our socially guarded protagonist are reaching a fever pitch. 

Episode 4 is officially scheduled to premiere on Thursday, April 23, 2026, at 11:56 p.m. JST in Japan. For the global audience, the episode will be available for streaming on Netflix approximately one hour after its domestic broadcast, placing the international release in the early hours of Friday, April 24, for many time zones. 

The Ramparts of Ice Episode 4 Global Release Date & Time

The Ramparts of Ice maintains a late-night slot that emphasizes its mature, introspective tone. Following the Japanese broadcast at 11:56 p.m. JST, Netflix will release the subtitled version for international fans (via the anime’s official site).

Due to the one-hour delay and the nature of global time zones, the release timing will vary. Here is when you can expect Episode 4 to drop in your region:

This places the worldwide premiere of Episode 4 on Netflix on Friday, April 24, 2026, at 12:56 a.m. JST. Therefore, it is advisable to keep an eye on Netflix and check every 5 to 10 minutes to see when the new episode rolls out.

What to Expect From The Ramparts of Ice Episode 4?

Minato and Koyuki in The Ramparts of Ice. [Credit: Studio KAI]

To understand where Episode 4 is heading, we have to look back at the emotional debris left by Episode 3. In the previous installment, we saw the “ice queen” Hikawa forced into an uncomfortable social proximity with the persistently cheerful Minato.

Episode 4 is set to be the catalyst episode since Hikawa already suspects Miki to have a crush on Minato, which is also making Hikawa walk on eggshells around them. Episode 4 will likely introduce the first major crack in the group dynamic because Miki’s one-sided crush on Minato and her discomfort in watching him fancy Hikawa.

Where to Watch The Ramparts of Ice Episode 4?

Koyuki, Miki, and Yota in The Ramparts of Ice. [Credit: Studio KAI]

The international audiences can primarily catch The Ramparts of Ice Episode 4 on Netflix. However, watching it isn’t the same everywhere, so below is a clear breakdown of which regions are or are not airing the show yet:

Japan: Local viewers can catch it on major terrestrial stations like Tokyo MX and BS11 before it hits the streaming services.

Global (US, UK, Canada, India, etc.): As explained, Netflix is your only legal destination.

Excluded Regions: As with many Netflix licenses, mainland China remains a notable exception. Fans in regions where Netflix is unavailable typically rely on local regional distributors or, more commonly, the use of a high-quality VPN to access the Japanese or North American Netflix library.

Have you tuned into The Ramparts of Ice yet? Tell us your favorite moments in the comments below.

The Ramparts of Ice is streaming globally on Netflix.