Deep Weebs Announces Holo Gakuen: S-Extra Class for Comifuro 23, Pre-Orders Open September 19

Deep Weebs has announced a new Comic Frontier 23 project titled Holo Gakuen: S-Extra Class!. The circle describes it as its first R18 doujin anthology, with pre-orders scheduled to open on September 19, 2026.

The promotional cover also establishes an important distinction from the outset: the book is explicitly labeled “Unofficial Fanbook” and “Doujin R18 / Adult Only.” Holo Gakuen: S-Extra Class! is therefore a fan-created derivative anthology based around the Hololive fandom, not an official publication released by COVER or hololive production.

> Content note: the project is promoted as an R18/adult-only doujin anthology. This article covers its announcement, publication details and fan-work context without describing explicit material from the book.

Quick Summary

• Title: Holo Gakuen: S-Extra Class!
• Type: doujin anthology / fanbook
• Status: unofficial fanbook
• Cover rating: R18 / Adult Only
• Circle: Deep Weebs
• Account: @DeepWeebsPro
• Primary fandom: Hololive
• Created for: Comic Frontier 23
• Event abbreviation: CF23 / Comifuro 23
• Pre-orders open: September 19, 2026
• Pre-order status at announcement: not yet open
• Comic Frontier 23 dates: October 31–November 1, 2026
• Venue: Indonesia Convention Exhibition / ICE BSD City
• Location: South Tangerang, Banten, Indonesia
• Project format: anthology involving multiple doujin artists
• Deep Weebs' claim: its first R18 doujin anthology
• Important distinction: this is not a claim that it is the first Hololive R18 anthology ever made
• Cover: revealed
• Cover label: Unofficial Fanbook
• Additional label: Doujin R18 / Adult Only
• Complete contributor list: unannounced
• Number of contributors: not yet detailed
• Page count: unannounced
• Book size: unannounced
• Print specifications: not yet detailed
• Price: unannounced
• Pre-order bonuses: unannounced
• Pre-order deadline: unannounced
• Payment methods: unannounced
• Shipping options: unannounced
• Event pickup: not yet detailed
• CF23 booth number: not announced in the verified material
• Print quantity: unannounced
• After-sales: unannounced
• Digital edition: unannounced
• COVER involvement: not announced
• Official Hololive status: not an official product
• Basis for that status: the cover explicitly identifies it as an Unofficial Fanbook
• Hololive derivative-work guidelines: officially available through COVER
• Fan doujin sales: permitted within fan/hobby-level activity under the overall guidelines, subject to applicable conditions
• Specific approval for this project: not announced
• Current status: awaiting the September 19 pre-order opening

Holo Gakuen: S-Extra Class and Comifuro 23

Deep Weebs' First R18 Anthology Project

The key point of the announcement is not simply that another Hololive fanbook is on the way, but that S-Extra Class! is being positioned as Deep Weebs' first R18 anthology.

The circle's wording is “our first ever R18 Doujin Anthology.” The word “our” matters because the claim concerns Deep Weebs' own catalogue and production history.

It should therefore not be interpreted as a claim that Holo Gakuen: S-Extra Class! is the first R18 Hololive doujin anthology ever produced by the wider fan community.

The anthology format also indicates that the book is being assembled from multiple creators rather than presented as a single long-form manga by one artist. Deep Weebs says the project features multiple Hololive doujinka, although the complete contributor list and final number of artists have not yet been announced in the verified material.

Pre-Orders Open on September 19

The most concrete commercial date provided so far is September 19, 2026, when Deep Weebs plans to open pre-orders.

At the time of writing, no closing date has been announced. Pricing, print quantity, shipping fees, local or international ordering options and Comic Frontier pickup procedures also remain unspecified.

September 19 should therefore be treated specifically as the pre-order opening date, not as the physical publication or shipping date.

Deep Weebs has used pre-order systems for previous event projects and merchandise, but the conditions attached to older projects should not automatically be carried over to Holo Gakuen: S-Extra Class!.

The final terms will depend on the CF23 catalogue or order form released specifically for this project.

Comic Frontier 23 Takes Place at the End of October

Holo Gakuen: S-Extra Class! is directly described as an upcoming project for Comifuro 23.

Comic Frontier 23 is scheduled for October 31 and November 1, 2026 at ICE BSD City in South Tangerang.

The event serves as a major creator market where independent circles bring doujinshi, comics, artbooks, fan works, merchandise and other creative projects directly to attendees.

With pre-orders opening on September 19, Deep Weebs will have more than a month between the first ordering window and CF23 itself.

However, the initial S-Extra Class! announcement does not yet reveal the booth number, attendance day, collection procedure or whether walk-up sales will be available at the venue.

The Cover Explicitly Marks It as an Unofficial Fanbook

One of the most important details appears directly on the promotional cover.

Above the Holo Gakuen: S-Extra Class! logo is the wording “UNOFFICIAL FANBOOK.”

That label separates the fan-created project from books, merchandise and publications officially released by hololive production.

The cover also carries the label “DOUJIN R18 — Adult Only,” making its intended readership clear from the first promotional material.

The accurate description is therefore a Hololive derivative fanbook / doujin anthology by Deep Weebs, rather than an “official Hololive anthology” or an official COVER product.

There is no verified announcement identifying COVER Corp. as the publisher, sponsor, partner or specific endorser of the book.

COVER's Guidelines Allow Fan Doujin Activities Under Conditions

hololive production maintains official Derivative Works Guidelines explaining how fan creations may be produced and distributed.

The current Indonesian version states that sales of derivative works such as doujinshi and goods at offline or online creator events and markets are permitted as long as those activities remain within fan and hobby-level boundaries.

Game Ad

CTRL+ESC

The same guidelines also establish restrictions, including avoiding presentations that could be mistaken for official content and complying with applicable laws, regulations, platform terms and event rules.

Those guidelines function as general rules; they are not an individual approval system for every particular fanbook.

Holo Gakuen: S-Extra Class! therefore should not be presented as if COVER specifically approved the project simply because a derivative-work framework exists.

Its own “Unofficial Fanbook” label remains the clearest indicator of the project's status.

Production Details Are Still Being Held for Later Announcements

The initial teaser confirms the title, cover, age classification, connection to CF23 and pre-order opening date.

Most production specifications, however, remain unrevealed.

There is currently no verified page count, physical size, color specification, binding format, price, complete artist list, number of stories, bonus content, merchandise bundle or print quantity.

It is also unclear whether every contributor will work within one shared narrative concept or whether the anthology will consist of independent segments by each artist.

Those details may be revealed when Deep Weebs opens its CF23 catalogue or pre-order form on September 19.

Until then, specifications from previous Deep Weebs projects should not be used to fill in missing information.

Why This Matters

1) Deep Weebs is trying an R18 anthology format for the first time

The circle specifically identifies S-Extra Class! as its first R18 doujin anthology, distinguishing it from a standard single-item merchandise release or ordinary fanbook.

2) The project brings multiple doujin artists together

An anthology format gives several creators room to contribute their own visual approaches, although the complete lineup has yet to be revealed.

3) Its fan-made status is made clear from the first cover

The “Unofficial Fanbook” wording immediately separates the project from officially licensed Hololive publications.

4) The reveal arrives well ahead of Comifuro 23

Pre-orders begin on September 19 while the event itself takes place at the end of October, leaving time for Deep Weebs to gradually reveal its catalogue, specifications and distribution details.

Doujin and Event Information

For now, the additional important information currently known includes:

• the project is titled Holo Gakuen: S-Extra Class!
• it was announced by Deep Weebs
• its official account is @DeepWeebsPro
• Deep Weebs is a creator circle producing doujinshi and merchandise
• S-Extra Class! is intended for Comic Frontier 23
• its primary fandom is Hololive
• the cover identifies it as an Unofficial Fanbook
• the cover also carries a Doujin R18 label
• an Adult Only label is also visible
• Deep Weebs describes the project as an R18 Doujin Anthology
• according to the announcement, it is Deep Weebs' first R18 anthology
• that claim does not mean it is the first Hololive R18 fan anthology ever made globally
• several contributor illustrations can be seen in the promotional cover
• the identities of all artists have not been announced
• the number of artists has not been announced
• pre-orders open September 19, 2026
• the exact opening time has not been announced
• the pre-order deadline has not been announced
• pricing has not been announced
• page count has not been announced
• physical dimensions have not been announced
• printing specifications have not been announced
• pre-order bonuses have not been announced
• merchandise bundles have not been announced
• local ordering methods have not been detailed
• international ordering methods have not been detailed
• shipping fees have not been announced
• CF23 pickup procedures have not been detailed
• Deep Weebs' CF23 booth number is not included in the verified announcement
• on-site sales quantity has not been announced
• a digital edition has not been announced
• shipping dates have not been announced
• Comic Frontier 23 runs October 31–November 1, 2026
• CF23 takes place at ICE BSD City
• Comic Frontier operates as a creator market for independent and fan-made works
• COVER publishes official Derivative Works Guidelines for Hololive content
• those guidelines permit doujinshi sales within fan and hobby-level activities under applicable conditions
• they also ask creators to avoid presenting fan works as official products
• the general guidelines do not constitute an individual endorsement of Holo Gakuen
• COVER has not been announced as the project's publisher
• hololive production has not been announced as a partner
• project information is available through the Deep Weebs Official X Post
• circle updates are available through Deep Weebs Official X
• event information is available through the Comic Frontier Official Website
• CF23 updates are available through Comic Frontier Official X
• fan-work rules are available through the hololive production Derivative Works Guidelines

Closing

Holo Gakuen: S-Extra Class! is Deep Weebs' next project for Comic Frontier 23 and the first R18 doujin anthology the circle has explicitly announced under its own catalogue. Its promotional cover clearly identifies the book as an unofficial fanbook, with pre-orders scheduled to open on September 19, 2026.

Most commercial and production details remain unavailable for now. Pricing, page count, the complete contributor lineup, bonuses, shipping procedures, booth information and the full ordering period are still awaiting further announcements from Deep Weebs.