A Unique Collaboration Experience at Gyukaku
The 2.5D talent group
Sixfonia is collaborating with the popular yakiniku chain
Gyukaku, operated by Reins International, creating a unique event for fans. Starting from
September 24, 2025, to
October 22, 2025, customers can enjoy this limited-time campaign at all Gyukaku locations across Japan.
What to Expect from the Collaboration
The concept revolves around creating an immersive experience that makes it feel as if
Sixfonia's members are genuinely working at Gyukaku, donning the restaurant's uniform while showcasing their distinct personalities through various visual representations. Alongside the collaboration, exclusive menus, original illustrations, and promotional merchandise will be available. Fans can also engage through digital content on apps and social media.
Themed Presentation: "Working at Gyukaku? A Glimpse into Sixfonia's Daily Life"
This fall,
Sixfonia members will take on the roles of staff inside Gyukaku. Specially illustrated visuals depict the members in Gyukaku uniforms, serving customers with their unique expressions and gestures, creating a blend of realism and playful enthusiasm. Furthermore, fans will have the opportunity to discover each member's recommended menu items, enabling a new way to enjoy yakiniku while feeling close to their favorite stars.
Exclusive Menu: The "Sixfonia Collaboration Plate"
One of the highlights of this collaboration is the exclusive 'Sixfonia Collaboration Plate', showcasing three carefully selected beef dishes from Gyukaku, handpicked by the members themselves. Each plate features an original design of ‘Sixfonia Picks’, tantalizing not just the taste buds but also the visual senses, enhancing the fan experience. Additionally, for every exclusive dish ordered, customers will receive a randomly chosen original coaster featuring new illustrations, making it a must-have for fans.
Engaging with the "Sixfonia Points" on Gyukaku's App
To elevate fan interaction, the Gyukaku official app will introduce the ‘Sixfonia Points’ during this collaboration. Customers can collect points through visits and orders, which can be exchanged for digital rewards. One of the highlights is an exclusive original wallpaper featuring the 'working Sixfonia' illustrations, perfect for showcasing their involvement daily on smartphones.
Moreover, fans can look forward to
“Sixfonia Radio,” a special video that treats viewers to the members sampling their favorite dishes along with behind-the-scenes commentary. It's designed to create an intimate atmosphere resembling a late-night radio show, where fans can learn a bit more about the members' unfiltered personalities and their love for Gyukaku.
Special Collaboration Campaign on X
Gyukaku's official X (formerly Twitter) will also launch a limited-time follow-and-repost campaign. Participants can follow the official account and repost a specified post to enter for a chance to win an original clear coaster set, helping fans complete their collection if they miss any from the restaurant.
Campaign Details
- - Campaign Name: Sixfonia × Gyukaku Collaboration Campaign
- - Duration: September 24, 2025 - October 22, 2025
- - Locations: Participating Gyukaku outlets nationwide
- - Special Campaign Site: Gyukaku Campaign
Who is Sixfonia?
Sixfonia is a 2.5D talent group formed by six outstanding individuals who triumphed in a major audition competition. Making their stunning debut in
August 2022 with the original song
“J0KER×JOK3R”, they have quickly risen to fame. Their engaging content includes original songs, challenge videos, and cover songs, rapidly gaining over a million subscribers within two years of their formation. Their momentum shows no signs of slowing down.
On
October 26, 2025, they will present their first-ever 3D live concert on YouTube, streamed worldwide for free. Additionally, live events will be held in
Osaka and
Tokyo later in the year, linking both live performances with the 3D experience.
Group Members
- - LAN (らん), Sutchi, Mikoto
- - Hima72 (ひまなつ), Ameno Kosame (あめのこさめ), Iruma
For more information, visit
Sixfonia's official X:
Sixfonia Info or their
YouTube Channel.
This collaboration with Gyukaku marks a significant milestone for both
Sixfonia and their fans, offering an incredible opportunity to merge dining with entertainment in an unprecedented way.