The fourth installment of the collaboration between Petit Depot’s sci-fi werewolf game “Gnosia” and eeo Cafe will be held from Saturday, September 19, 2026, through Thursday, October 8, 2026.

With the theme of “Space School,” six characters—depicted by illustrator Keiko-sensei as members of a cultural festival music band—make their appearance.

The menu features six collaboration drinks and three food items inspired by the band members, and customers who place an order will receive a coaster (14 designs total) as a special gift!

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Details on the Gnosis × eeo Cafe Event

This is the first collaboration café in about two years, and it marks the fourth installment in the series.

Keiko-sensei’s life-size original illustration features the theme “Band,” while GraffArt’s illustration features the theme “Festival Stalls.”

Collaboration Food Menu

There are three items in total: dishes inspired by Rakio Siphi and crepes themed around cold sleep.

The waffle keyboard is topped with chocolate sauce shaped like a guitar and musical notes, and each crepe comes with one randomly selected flag from a set of 14 “Gnosia faces.”

*One flag will be randomly selected from a total of 14 Guno face designs.
*Please check the PDF on the official website for allergy information.

Collaboration Drink Menu

A lineup of drinks inspired by the six band members is available for 660 yen each (tax included).

Each drink comes with a character-themed pick modeled after a stage pass.

*Please note that the menu is subject to change or items may be unavailable depending on supply.

Gnosis × eeo Cafe Menu Order Bonus

For every drink or food item ordered, you’ll receive one random coaster.

If you order a set menu, you’ll receive 3 coasters at random, and you’ll receive 1 coaster for every purchase of takeout sweets (set of 2).

There are 14 different coaster designs in total, and **the designs will change during the first half of September 19 (Sat) through 28 (Mon), and in the second half of September 29 (Tue) through October 8 (Thu)**.

*You cannot choose the design.
*If you purchase the take-home sweets (set of 2) through our online store, you will receive only the standard-face design, regardless of when you place your order. To receive the Guno-face design, please visit the café in-store or purchase take-home sweets at the store.
*Coasters are available in limited quantities. Please note that this offer will end once supplies run out.
*Images are for illustrative purposes only. Actual products may differ.

Gnosis × eeo Cafe Collaboration Merchandise

The new merchandise comes in two lines: one featuring life-size original illustrations by Keiko-sensei, and another featuring GraffArt illustrations.

Online sales begin on Friday, August 7, 2026, while in-store sales will run from Saturday, September 19, to Thursday, October 8—the same period as the cafe event.

Merchandise Featuring Keiko-sensei’s Life-Size Original Illustrations

This lineup features a new illustration depicting the six members in their band outfits.

©Petit Depotto

Merchandise Featuring Life-Size Original Illustrations

Product Name	Number of Varieties	Price
Set of 6 Pin Badges	1 design	3,480 yen (tax included)
Acrylic Stands	6 designs total	2,030 yen each (tax included)
Set of 3 Postcards	2 designs total	550 yen each (tax included)
15 cm Ruler	1 design	770 yen (tax included)
Set of 3 A4 Clear Folders	1 design	2,200 yen (tax included)
Canvas Board (No. 3 F Size)	1 design available	5,500 yen (tax included)

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GraffArt Illustration Merchandise

Merchandise featuring stylized illustrations with a “festival food stall” theme is now available!

*Images are for illustrative purposes only. Actual products may differ.
*Depending on crowd levels, in-store merchandise purchases may be limited to customers who have made a café reservation or scheduled in-store pickup.

An interview with Toru Kawakatsu, producer of “Gnosia,” has also been published

To commemorate the collaboration café and the release of new merchandise, an email interview with Toru Kawakatsu—representative of Petit Depot and producer of “Gnosia”—has been published on “eeo Media.”

In the interview, he discusses his impressions upon hearing the theme “Space School,” the reason he commissioned Keiko-sensei to create the life-size illustrations, and his thoughts on the collaboration menu.

“Gnosia” × eeo Cafe: Collaboration Cafe Opens September 19!

Frequently Asked Questions about “Gnosia” × eeo Cafe

When and where will the event be held?

It will be held from Saturday, September 19, 2026, to Thursday, October 8, 2026, at eeo Cafe (7-minute walk from Ikebukuro Station East Exit).

Is a reservation required?

The event operates on a strict time-slot rotation system, and seat reservations are required. Depending on how crowded it is, purchasing merchandise at the store may be limited to those with a café reservation.

How much do the collaboration menu items cost?

There are 3 food items ranging from 990 yen to 1,210 yen (tax included), and 6 drink items, each priced at 660 yen (tax included).

What kind of bonus item do I get with my order?

For every drink or food item ordered, you’ll receive one random coaster (14 designs total). If you order a set menu, you’ll receive three random coasters.

Do the coaster designs change during the promotion period?

Yes, they do. The designs distributed from September 19 (Sat) to 28 (Mon) will differ from those distributed from September 29 (Tue) to October 8 (Thu).

Do I have to visit the café to buy the merchandise?

You can also purchase them online. Online sales begin on Friday, August 7, 2026, while in-store sales run from Saturday, September 19, to Thursday, October 8—the same period as the café event.

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Please check the official website.
*Please note that the information in this article may be out of date. We apologize for the inconvenience, but please check the official website for the latest information.

©Petit Depotto