GK Marketing Co., Ltd. (Headquarters: Chiyoda-ku, Tokyo; President and CEO: Shinji Yamamoto) will be selling original merchandise as part of a collaboration campaign with virtual YouTuber “Roa Kumogetsu” and ROUND1 (Round One Japan Co., Ltd., Head Office: Chuo Ward, Osaka City, Osaka Prefecture; President and CEO: Eiji Kawaguchi).
A wide variety of new items featuring two original illustrations—one of her in a school uniform and one in casual attire—will be available! We will also be selling merchandise featuring mini-character illustrations designed to enhance your ROUND1 experience.
Each item will go on sale at select ROUND1 locations starting Friday, September 4, 2026.
Additionally, pre-orders will be accepted on GK Marketing’s e-commerce site, “GK Store,” starting at 12:00 PM on the same day.
Event Information
“Kaigetsu Kumo Roa” × ROUND1 Collaboration Campaign
〇Event Period: Friday, September 4, 2026 – Sunday, December 6, 2026
[First Half] Friday, September 4, 2026 – Tuesday, October 20, 2026 / [Second Half] Wednesday, October 21, 2026 – Sunday, December 6, (Sun)
〇Participating Stores: All ROUND1 locations *Merchandise will be available at only 5 stores
〇Event Special Website
https://www.round1.co.jp/collaboration/kurageu/index.html
Event Details
・Sales of original merchandise (Ikebukuro Store, DiverCity Tokyo Plaza Store, Yokohama Station West Exit Store, Nakagawa Route 1 Store, Sennichimae Store)
・ Capsule toy sales (Ikebukuro Store, DiverCity Tokyo Plaza Store, Yokohama Station West Exit Store, Nakagawa Route 1 Store, Sennichimae Store)
・Crane game prizes exclusive to the amusement corner
・Amusement Must-Buy Campaign
・ Sales of Limited-Edition Collaboration Packs (Bowling, Karaoke, Spoccha, Billiards, Darts)
・Karaoke Collaboration Rooms (Diversity Tokyo Plaza Branch, Nakagawa 1-gōsen Branch, Sennichimae Branch)
・Sales of Collaboration Menus
・AR Stamp Rally (Available at Spoccha facilities in all locations)
・Original Rism Collaboration Frames
・Bowling Score Registration Campaign / Bowling Score Visual Effects
・X Follow & Repost Campaign, etc.
*Participating locations vary by campaign.
*Please note that the content listed is subject to change without notice.
*Merchandise and promotional items may be available only while supplies last.
*Please check the collaboration website for details, important notices, the latest information, and participating locations for each collaboration.
Merchandise Information
Release Date: Friday, September 4, 2026
Participating Stores: Ikebukuro Store, DiverCity Tokyo Plaza Store, Yokohama Station West Exit Store, Nakagawa 1st Line Store, Sennichimae Store
Merchandise Online Store: GK Store
└Online Ordering Period: September 4 (Fri) 12:00 PM – December 13 (Sun) 11:59 PM
■Acrylic Stand
Price: 1,980 yen (tax included)
Varieties: 2 types total
Specifications: Total height approx. 180 mm or less / Acrylic
■ Pin Badge Collection
Price: 550 yen (tax included)
Number of Varieties: 8 varieties total
Specifications: Φ57 mm / Tinplate
*Due to the blind packaging, you cannot select the design.
*A complete set is also available for purchase online.
■Acrylic Keychain
Price: 1,320 yen (tax included)
Number of Varieties: 2 types total
Specifications: Approx. W70 x H100 mm / Acrylic
■Acrylic Sticker Collection
Price: 550 yen (tax included)
Number of Varieties: 8 in total
Specifications: Within W60 x H60 mm / Acrylic
*Due to the random selection process, you cannot choose the design.
*Complete sets are also available for purchase online.
■B2 Tapestry
Price: 4,400 yen (tax included)
Varieties: 2 types total
Specifications: Approx. W515 × H728 mm / Polyester, suede
■ Clear File & Sticker Set
Price: 1,100 yen (tax included)
Varieties: 2 types total
Specifications: [Clear File] A4/PP
[Sticker]: Up to W60 × H100 mm/Paper
*Images are for illustrative purposes only. Actual products may differ.
*Depending on the number of customers visiting the store, we may distribute numbered tickets.
*Information regarding the distribution of numbered tickets, details on the day of distribution, and announcements about sold-out or restocked items will be posted on the X accounts of each store selling the collaboration merchandise.
*Product releases, specifications, and other details are subject to change, postponement, or cancellation due to various circumstances.
Capsule Toy Information
■ Marker Charms (6 varieties total)
Release Date: Friday, September 4, 2026
Retail Locations: Ikebukuro Store, DiverCity Tokyo Plaza Store, Yokohama Station West Exit Store, Nakagawa Route 1 Store, Sennichimae Store
Price: 500 yen (tax included) per play
Number of Varieties: 6 in total
Specifications: Approx. W45 x H45 mm or less (design area)/ Acrylic
*Images are for illustrative purposes only. Actual products may differ.
*Product release dates, specifications, and other details are subject to change, postponement, or cancellation due to various circumstances.
Crane Game Prizes
■ Aurora Acrylic Stands with Reproduced Signatures (2 varieties total)
Release Date: Friday, September 4, 2026
Available at: All Round One locations (Prizes available exclusively in the amusement corner)
Varieties: 2 types total
Dimensions: Approx. W150 × H100 mm / Acrylic
Amusement Experience Bonus
Customers who play eligible crane games by inserting 500 yen or more consecutively will receive one randomly selected [A5 Clear File (2 designs total)] as a bonus.
*Images are for illustrative purposes only. Actual products may differ.
*Product releases, specifications, and other details are subject to change, postponement, or cancellation due to various circumstances.
Collaboration Limited Pack
The Collaboration Pack will be available for purchase at 98 bowling alleys, 93 karaoke venues, 55 Spotcha locations, 47 billiards halls, and 75 darts venues nationwide within the ROUND1 chain. Customers who purchase a collaboration pack will receive one randomly selected item from the first half [B4 Visual Mats (4 types total)] or the second half [B4 Visual Mats (4 types total)].
Karaoke Collaboration Rooms
Exclusively at three locations—Diversity Tokyo Plaza, Nakagawa 1-sen, and Sennichimae—we’re launching collaboration rooms decorated with “Kaigetsu Kumo Roa” themes.
When you use a collaboration room, you’ll receive one of the first-half [B4 Visual Mats (2 types total)] and and in the second half, one of the [B4 Visual Mats (2 types total)] will be presented to you at random.
Collaboration Menu
Collaboration menus will be available at 93 bowling alleys, 93 karaoke locations, 43 billiards locations, and 71 darts locations nationwide. Additionally, at 55 Spoccha locations, we’ll be offering collaboration popcorn and customizable drinks where you can freely add ice to your favorite beverage. Customers who order any eligible menu item will receive one random gift: [Acrylic Keychains (6 varieties total)] during the first half of the campaign, or [Acrylic Coasters (6 varieties total)] during the second half.
*At the 5 locations without karaoke facilities, we will be selling drinks that come with a free gift.
AR Stamp Rally
We will be holding an AR digital stamp rally using smartphones at all Spoccha locations. As you explore the Spoccha floor and scan the QR codes at all three designated spots, those who collect all three digital stamps will receive one of the [Original Cards (6 types total) as a finish line reward at the Spoccha front desk.
By scanning the QR codes, you can also enjoy AR photo frames featuring collaboration illustrations.
* You cannot choose the type of original card.
* This offer ends when supplies run out.
* Images are for illustrative purposes only.
Rism Collaboration Original Frames
Starting Monday, September 7, collaboration designs featuring “Kaigetsu Kumo Roa” will be available on Round One’s original photo print machine, “Rism.” During the event period, customers who use a collaboration pack or a collaboration room will receive one exclusive “Rism” coin per group as a limited-time gift.
Bowling Score Registration Campaign / Bowling Score Effects
We are holding a bowling score registration campaign at 98 ROUND1 bowling locations nationwide. Participants who register for the campaign, bowl two games, and achieve a total score of 140 or higher for men or 100 or higher for women will receive one randomly selected [A5 Clear File (2 designs available)] as a gift.
Additionally, at 98 ROUND1 bowling locations nationwide, you can change the display effects on the bowling score monitor to a collaboration-themed design. We hope you’ll enjoy this feature along with the collaboration pack.
*Please check the special campaign website for details on the campaign period and participation requirements.
X Follow & Repost Campaign
We are holding a giveaway campaign where you can win exclusive merchandise by following and reposting the relevant post from the official ROUND1 account.
Please check the official ROUND1 LIVE X account for details.
Company Overview
[GK Marketing Co., Ltd.]*A wholly-owned subsidiary of Gokurakuyu Holdings Co., Ltd.
Representative: Shinji Yamamoto, President and CEO
Established: August 2023
Headquarters: 6th Floor, Kojimachi Tsuruya Hachiman Building, 2-4 Kojimachi, Chiyoda-ku, Tokyo 102-0083
Capital: 10 million yen
Business Activities: Event planning and production; e-commerce site operation; product planning, design, wholesale, manufacturing, and sales
URL:https://gkmarketing.co.jp/
Legal Notices & Related Sites
[Legal Notices]© 2025 Kaigetsu Kumo Roa
[Related Sites]《GK Store (Official E-Commerce Site)》
《Official X》
https://x.com/ GKMarketinginfo
Author of this Article
GK Marketing Co., Ltd.
GK Marketing Co., Ltd. (a wholly-owned subsidiary of Gokurakuyu Holdings Co., Ltd.) Representative: Shinji Yamamoto, President and CEO Established: August 2023 Headquarters: 6th Floor, Kojimachi Tsuruya Hachiman Building, 4 Kojimachi 2-chome, Chiyoda-ku, Tokyo 102-0083 Business Activities: Event planning and production, e-commerce site operation, product planning, design, wholesale, manufacturing, and sales URL: https://gkmarketing.co.jp/
