Sushi Chain Carves Its Name in History with Record-Setting Tuna Spectacle

CHIBA, Japan — In a dazzling display of precision and tradition, the Japanese sushi restaurant chain Choushimaru Co. has sliced its way into the record books. The company recently secured a Guinness World Records title for orchestrating the largest simultaneous tuna filleting performance, a synchronized spectacle conducted across 71 of its locations in and around Tokyo.

The historic event unfolded on November 1, a date celebrated in Japan as "Sushi Day." At approximately 11:30 a.m., chefs at every participating restaurant—spanning Tokyo, Saitama, Chiba, and Kanagawa prefectures—began their meticulous work on prized bluefin tuna, each weighing around 40 kilograms and sourced from Nagasaki Prefecture. United by a live video conference to ensure synchronicity, the venues transformed individual craft into a massive, coordinated show.

For Choushimaru, a chain that prides itself on the skill of its chefs across all outlets, this event marked the triumphant return of its popular tuna cutting show, which had been paused since the coronavirus pandemic.

The Guinness recognition was a moment of immense pride for the company. Ken Ishii, head of Choushimaru, was elated, attributing the achievement to a company-wide effort. "This is the result of various departments working together on procurement and hygiene management," he said.

At one Tokyo restaurant open to media, diners including families watched the performance with keen interest, later savoring the freshly prepared tuna. "What an impressive performance," remarked a woman in her 70s, visiting with her husband. "The medium-fatty tuna melted in my mouth and tasted great."

The record-setting day underscores the deep cultural significance of tuna in Japan, a leading consumer nation where the fish is a sushi staple. The designation of November 1 as "Sushi Day" by a national federation of sushi unions decades ago honors the autumn season, when ingredients are considered at their peak—with fatty fish and newly harvested rice abundantly available.