Empress Michiko
He developed an exclusive line of chopsticks called "Tsutsuihajime×Hyozaemon". They attracted massive attention, and created a phenomenon called "My hashi boom" ("hashi" means chopsticks in Japanese) in the Japanese industry. "TsutsuihajimexHyozaemon" sold 40 million sets of designed chopsticks. The collaboration was a huge success. Hajime eventually designed special chopsticks for Emperor Akihito and Empress Michiko.