Rintama High Season Archive

What this timeline records

The dates here come from the official creator Patreon sitemap and public posts. This is a publication timeline, not a claim about every individual player’s access on a particular day. That narrow rule prevents a familiar wiki failure: treating an old announcement title as proof that a system, code, or access method is still active months later.

Where a public post provides more text, this page records only the added detail that is explicit. The Welcome to Nagiso post, for example, calls Nagiso the first map expansion and describes the train connection from the main city. Several season posts simply provide a title or link a teaser. Their value is still real: they let players see the project’s public chronology and navigate back to the original creator material.

January to March 2025: public arrival and expansion

The official archive lists Rintama High on 20 January 2025, Walking towards Rintama High on 21 January, Teaser Trailer 1 on 23 January, and Teaser Trailer 2 on 30 January. These entries mark the public launch-period media trail. The two trailers are preserved on this site’s Trailer Archive because their original Patreon posts publicly link to the corresponding official YouTube videos.

On 14 March 2025, the creator posted Welcome to Nagiso. This is the point where the public record becomes more specific about the world: Nagiso is described as the first map expansion, a town near the main city, and a place reachable by train. The archive then lists The beauty of Hokuheki City & Nagiso on 31 March. Together these posts provide a dated path from the initial school-and-city presentation to an explicitly named expansion.

• 20–30 January 2025 — launch-period Rintama High posts and the two public teasers.
• 14 March 2025 — Welcome to Nagiso, described by the creator as the first map expansion.
• 31 March 2025 — The beauty of Hokuheki City & Nagiso appears in the official archive.

Season 1.5 and Season 2

The official sitemap records several Season 1.5-era entries in June 2025, including Season 1.5 on 10 June, Rintama High: Season 1.5 on 13 June, and RINTAMA HIGH: SEASON 1.5 on 23 June. The public 23 June post says that the teaser had released and directs players to check it out and apply in the Discord. It also links the video now labelled Rintama High | Beach arc Teaser in the Trailer Archive.

Later entries list THE GHOST on 3 July, SEASON 2: OUTRAGE on 1 August, and RINTAMA HIGH: SEASON 2 TEASER 2 on 13 August 2025. The chronology supports a simple conclusion: the creator publicly moved from the Season 1.5 material to Season 2-labelled material during 2025. It does not support a detailed feature list unless the individual creator post publishes one.

The Season 4 post

The official Patreon sitemap lists a post titled SEASON 4 on 11 May 2026. It appears alongside April 2026 posts titled CLUB ROOM TIER and SHOP TIER 1, SHOP TIER 2, and SHOP TIER 3. This is valuable as current creator-archive evidence that a Season 4-labelled announcement exists, but a title alone is not a substitute for its full content or for the current in-game state.

For that reason, this guide does not turn the Season 4 title into an invented release sheet. Players looking for current participation information should follow the official Roblox community; players looking for creator announcements should open the official Patreon directly. The archive’s role is to keep the older public trail legible when an announcement has moved down a feed.

Use the archive, then return to live sources

A season timeline is most useful when it points forward. If you are new, begin with the trailers to see the public visual arc, read the world guide for the Hokuheki–Nagiso facts, then use the Training Grounds for the published control list. If you are returning after a break, compare the date of an old memory with the official archive and then check the newest community notice before assuming the old route still applies.

This approach is intentionally less dramatic than a fan-maintained changelog, but it is more durable. The creator owns the live announcements, and the game can change. The site owns a traceable reference path: title, date, original source, and a clear warning not to make more of the evidence than it says.