GK Marketing Inc., a subsidiary of Gokurakuyu Holdings, has announced a collaboration campaign between virtual YouTuber Kurageumo Roa and ROUND1 (Round One Japan Co., Ltd.), running from September 4 to December 6, 2026. Built around two newly drawn illustrations showing Roa in her school uniform and in casual clothes, the campaign spans more than ten separate initiatives, including merchandise sales and karaoke collab rooms.

Two new illustrations across five stores and the online shop

The collaboration brings a wide range of new merchandise using two freshly drawn illustrations of Kurageumo Roa, one in her school uniform and one in casual wear. An acrylic stand (1,980 yen), a can badge collection (550 yen, eight designs), an acrylic keychain (1,320 yen), a B2 tapestry (4,400 yen) and a clear file and sticker set (1,100 yen) will be sold at five locations: Ikebukuro, DiverCity Tokyo Plaza, Yokohama Station West Exit, Nakagawa Route 1 and Sennichimae.

From noon on September 4, made-to-order sales will also run on GK Marketing’s “GK Store” online shop, with orders accepted through December 13. Capsule toys (six marker charm designs, 500 yen) and a crane game exclusive prize (an aurora acrylic stand with a reproduced signature) launch the same day.

Karaoke collab rooms and an AR stamp rally

Karaoke rooms decorated with Kurageumo Roa artwork will be available exclusively at three locations: DiverCity Tokyo Plaza, Nakagawa Route 1 and Sennichimae. Guests who use them receive a B4 visual mat.

Every Spo-Cha floor inside ROUND1 venues nationwide will host an AR digital stamp rally played on a smartphone. Visitors scan QR codes at three points on the Spo-Cha floor, and collecting every stamp earns an original card (six designs).

Collab packs and menu items roll out nationwide

Limited collab packs will be sold at ROUND1 facilities across Japan, covering 98 bowling locations, 93 karaoke locations and 55 Spo-Cha locations. Customers who buy one receive a randomly selected B4 visual mat. Ordering from the collab menu also earns an acrylic keychain (first half) or an acrylic coaster (second half).

On top of that, all 98 bowling locations will run a score registration campaign, awarding an A5 clear file to anyone who reaches a combined score of 140 or more for men and 100 or more for women. Bowling score display monitors can also be switched to a collab design.

What comes next

Kurageumo Roa’s collaboration with Karaoke Manekineko only began on August 20, so this ROUND1 tie-up marks back-to-back partnerships with major entertainment chains. The official campaign site carries the latest details along with the full list of participating locations.

Our take

This is a large-scale, roughly three-month campaign packing in more than ten initiatives, from merchandise and karaoke collab rooms to an AR stamp rally and a bowling campaign. Swapping the bonuses between the first and second halves is clearly designed to encourage repeat visits, and for Kurageumo Roa’s fans the whole structure is built to trigger the urge to complete the set. Following the Manekineko tie-up, this run of partnerships with entertainment chains shows that an independent VTuber’s commercial value has reached a level comparable to agency-affiliated talent.

Source: PR TIMES