From 11:00 on May 14 to 15:00 on May 28, 2026, six popular toppings cost a base 100 yen (110 yen dine-in, 108 yen takeout) at Yoshinoya stores nationwide. The lineup adds Mentai-Takana Mayo, and the Ruro-rou Beef Bowl and Ruro-rou Black Curry are 48 yen off during the same period. Yoshinoya Holds Topping Festival with 6 Popular Toppings at 100 Yen Yoshinoya Co., Ltd. (Headquarters: Chuo-ku, Tokyo; President: Tetsuya Naruse) will hold the Topping Festival at Yoshinoya stores nationwide from 11:00 on Thursday, May 14, 2026 to 15:00 on Thursday, May 28, 2026. During the campaign, six popular toppings will be offered at a base price of 100 yen (110 yen tax-included for dine-in, 108 yen tax-included for takeout). Campaign Overview The campaign offers six popular toppings at special prices. Customers can add their favorite toppings not only to beef bowls but also to set meals and…

Osatsu Dokki MOS Shake Coffee Flavor lands at convenience stores nationwide on Monday, May 18, 2026, and at select MOS Burger restaurants from May 20. The 40g bag is 190 yen tax included, though retailers set their own price. It pairs sweet potato chips with the coffee shake MOS has sold since around 1990. A Buzz-worthy Collaboration Between MOS Burger and UHA Mikakuto MOS Burger, operated by MOS Food Services, Inc., has teamed up with UHA Mikakuto Co., Ltd.’s popular sweet potato chip brand Osatsu Dokki to launch a new collaborative product, “Osatsu Dokki MOS Shake Coffee Flavor”. The item will be available at convenience stores nationwide in Japan starting Monday, May 18, 2026, and at select MOS Burger restaurants from Wednesday, May 20, 2026. Coffee Shake Meets Sweet Potato Osatsu Dokki is a sweet potato chip that highlights the natural sweetness of sweet potatoes. This collaboration combines

From May 16 to June 30, 2026, ordering any of the four Gokuoh dishes at Gyoza no Ohsho takes 30 yen off regular gyoza (6 pieces) or 15 yen off Just Size (3 pieces), tax included. The discount applies once per eligible Gokuoh item. Raw gyoza is excluded, and Just Size is not available for takeout. Gyoza no Ohsho Announces Popular Gokuoh x Gyoza Fair Ohsho Food Service Corporation will hold the Popular Gokuoh x Gyoza Fair from Saturday, May 16 to Tuesday, June 30, 2026 at Gyoza no Ohsho and GYOZA OHSHO outlets nationwide (excluding some stores). The campaign teams up four top-selling items from the flagship Gokuoh series with the chain’s signature piping hot, juicy gyoza at special prices. Campaign Overview Customers who order any one serving of the four eligible Gokuoh series dishes will receive the following discounts: Gyoza (regular size: 6 pieces) at 30

MOS Burger’s first collaboration with Imuraya brings two Ice Dolce warabi mochi desserts — Amaou strawberry cream and Uji matcha with kuromitsu — at 260 yen each from May 20 through early September at stores nationwide. Both arrive frozen, so let them sit 5–10 minutes to reach the bouncy texture. The 520-yen white peach souffle pancake is dine-in only from 11:00 AM. MOS Burger and Imuraya Team Up for the First Time MOS Food Services, Inc. will release new collaborative sweets with Imuraya Co., Ltd. at MOS Burger stores nationwide (excluding some locations) from Wednesday, May 20, 2026 through early September. The lineup includes “Ice Dolce Strawberry Cream Ice Warabi Mochi with Amaou Sauce” and “Ice Dolce Matcha Cream Ice Warabi Mochi with Kuromitsu Sauce.” The seasonal “Fluffy Souffle Pancake with Domestic White Peach Sauce” will also be available. A Melting Ice Warabi Mochi Co-Developed with Imuraya Since

Three limited drinks land at MOS Burger nationwide from May 20, 2026. White Peach Soda, blending domestic white peach sauce with Setouchi lemon, starts at 290 yen for a small, while the One Whole Lemon! version costs 590 yen. Tea Milk, a first from the cafe-format stores, runs 420 yen and lasts until early November. MOS Burger Unveils Three New Summer Beverages MOS Food Services Co., Ltd. will release three limited-edition summer drinks at MOS Burger locations nationwide (excluding select stores) starting Wednesday, May 20, 2026. The lineup includes White Peach Soda with Domestic White Peach & Lemon Sauce, One Whole Lemon! White Peach Soda with Domestic White Peach & Lemon Sauce, and the first-ever crossover product with the brand’s cafe-format stores, Tea Milk with Candy Tea Leaves. New Product Lineup and Highlights White Peach Soda with Domestic White Peach & Lemon Sauce A refreshing drink made by

Baku-Tantan arrives at Hanamaru Udon stores nationwide from May 13 to June 3, 2026, weighing about 1kg with roughly 340g of meat, at 1,380 yen medium and 1,600 yen large, dine-in only. The Akasaka Hitotsugi-dori branch reopens on May 13 as the first Niku-Ten outside Takamatsu, with 29 servings a day at 290 yen through May 16. Hanamaru Udon Niku-Ten Debuts in Honshu Hanamaru Inc. (headquartered in Takamatsu, Kagawa) will reopen its Akasaka Hitotsugi-dori location as Hanamaru Udon Niku-Ten (Akasaka Hitotsugi-dori Store) on Wednesday, May 13, 2026. As part of the “Oidemai! Sanuki Project” aimed at creating new value for Sanuki udon, this meat-focused concept store, previously operated only in Takamatsu since August 2025, makes its first appearance in Honshu. Store Information Name: Hanamaru Udon Niku-Ten (Akasaka Hitotsugi-dori Store) Address: 1F ORANGE BOX, 3-19-9 Akasaka, Minato-ku, Tokyo 107-0052 Hours: Weekdays 10:00-21:00 / Sat 11:00-20:30 / Sun & Holidays

Ichibanya brings back ‘Horoniku Dokan to Goukai Curry’, the November 2025 Meat Chunk Election winner, at roughly 670 CoCo Ichibanya locations from Friday, May 15, 2026, while supplies last. Pork shoulder loin is slow-cooked until spoon-tender and topped with Chaliapin sauce, and you pick a meat chunk level from 1 to 4 when ordering. The No.1 Winner of the Meat Chunk Election Returns! Ichibanya Co., Ltd. has announced the limited-edition relaunch of ‘Horoniku Dokan to Goukai Curry’ (Tender Meat Chunk Hearty Curry) at approximately 670 CoCo Ichibanya curry house locations nationwide starting Friday, May 15, 2026. This menu item topped the November 2025 ‘Meat Chunk Election’ and returns by popular demand. The Original Meat Chunk Curry Voted No.1 by Fans In November 2025, CoCo Ichibanya’s official X account held the ‘Meat Chunk Election’, inviting fans to vote for the meat chunk curry they most wanted to eat again

COCO’S ran its Haikyu!! campaign from May 19 to June 29, 2026 at 504 locations nationwide, excluding airport stores. This campaign has already ended — check the official COCO’S site for the next one. Ordering eligible menu items earns one of 16 A4 clear file folders at random, capped at six items per person per day. Phase 1 features Karasuno High designs, Phase 2 switches to Aoba Johsai. COCO’S JAPAN, the family restaurant chain operated by Zensho Holdings, held a collaboration campaign with the popular anime Haikyu!! from May 19 (Tuesday) to June 29 (Monday), 2026, at 504 locations nationwide (excluding airport stores). The campaign has already finished (the Phase 2 web lottery also closed on July 6), so the details below are kept for reference — check the official COCO’S site for future collaborations. The campaign is titled “Let’s Gather at COCO’S Again Today! Campaign“. Campaign Overview