Operation Yum 2026 brings Zenless Zone Zero characters and merchandise to Kyuramen.
HoYoverse's Zenless Zone Zero Operation Yum 2026 collaboration with Kyuramen begins August 14, 2026, at Kyuramen locations across the U.S. and runs through October 15, 2026. The collab-limited bundle includes a badge or keychain and a Perfect Taste Bundle redemption card containing one Collab Exclusive Commemoration Avatar, one Namecard, one Stamina Item, 30,000 Denny, and three Senior Investigator Logs. Limited merchandise is also distributed during two promotional phases of the collaboration.
Operation Yum 2026: Global Deliciousness Collab Now Live
Zenless Zone Zero has launched Operation Yum 2026, a global collaboration event pairing the game with real-world dining partners across multiple regions. The campaign is themed around Agents Ellen, Manato, and Crispyboo, and combines an in-game redemption bundle with a social media giveaway. The event went live on July 17, 2026.
Collaboration Rewards
Proxies who purchase featured Operation Yum menu items at participating restaurant partners can redeem a Perfect Taste Bundle in-game using an exclusive code. The bundle includes:
Collab Exclusive Commemoration Avatar ×1
Namecard ×1
Stamina Item ×1
Denny ×30,000
Senior Investigator Log ×3
Select regions additionally offer a Delicious Delight Bundle, which includes:
Denny ×20,000
Senior Investigator Log ×3
W-Engine Energy Module ×1
Participating Regions and Dates
Region
Partner
Dates
Taiwan
CITY TEA
08/05 – 08/18
Hong Kong
animato Hong Kong
08/12 – 09/06
Japan
Wendy's First Kitchen
08/05 – 09/23
Korea
Banolim Pizza
08/04 – 08/25
Singapore
Haidilao Hotpot
To be announced
Thailand
KOI Thé
07/30 – 09/08
USA
Kyuramen
08/14 – 10/15
Germany
HoYoverse Café
07/29 – 08/13
United Kingdom
To be announced
To be announced
Russia
To be announced
To be announced
Redemption Rules
Collaboration products are limited in stock and sold on a first-come, first-served basis.
The Perfect Taste Bundle redemption code is valid from 2026/07/01 00:00 to 2026/12/31 00:00 (UTC+8) and can be entered in-game on the America, Asia, Europe, or TW/HK/MO servers. Rewards are delivered via in-game mail, which expires after 30 days.
Each game UID may redeem the Perfect Taste Bundle once; it cannot be stacked. Each UID may redeem up to 10 Delicious Delight Bundles.
Redemption codes cannot be resold, transferred, or traded.
For inquiries, contact Zenless Zone Zero customer service in-game.
Social Media Interactive Event
Alongside the in-game redemption, HoYoverse ran a companion giveaway on social media, open from July 17 to July 23. Participants were asked to comment or repost sharing which collab dish they most wanted to try. Winners received a Cinema Series Framed Acrylic Card Set (with display frame) featuring a random character, with 50 sets available. As of the August 6 update, this portion of the event has concluded and winners have been announced.
Important Notes
Only one prize per account.
Participants must enable Reward Notifications in advance, as results are delivered via in-game system message; rewards affected by disabled notifications will not be reissued.
Entries involving rule violations, plagiarism, reply-to-reply chains, separate posts instead of direct replies, or advertising content are disqualified.
Full campaign terms are available via the official collaboration page.
No. The premium merchandise is limited to the first 100 qualifying dine-in customers at each participating location during the relevant promotional phase. The items are distributed while supplies last.
No. The Collab Group Standee is distributed during the first promotional period from August 14 through September 14, 2026. The Collab Ramen Spoon follows from September 15 through October 15, 2026.
You receive a collaboration badge or keychain and a Perfect Taste Bundle redemption card. The digital bundle contains one Collab Exclusive Commemoration Avatar, one Namecard, one Stamina Item, 30,000 Denny, and three Senior Investigator Logs.
The Operation Yum collaboration is being held at Kyuramen locations across the U.S. The event runs from August 14 through October 15, 2026.
COSM-GAME 
Social Media Interactive Event
Alongside the in-game redemption, HoYoverse ran a companion giveaway on social media, open from July 17 to July 23. Participants were asked to comment or repost sharing which collab dish they most wanted to try. Winners received a Cinema Series Framed Acrylic Card Set (with display frame) featuring a random character, with 50 sets available. As of the August 6 update, this portion of the event has concluded and winners have been announced.