Sumikko Gurashi and Marugame Seimen Collaboration Starts July 14
Sumikko Gurashi and udon chain Marugame Seimen launch a collaboration campaign from July 14 to August 31, 2026, featuring a limited-time Marutto Wakuwaku Udon Box with character-themed design, collectible udon tickets in two rounds, giveaway goods including coasters and bag clips, and an SNS lottery for a cooler bag. The campaign targets families during summer vacation.