Sushiro’s Karauma Katsuura Tantanmen brings Chiba’s chili-oil noodle tradition to restaurants across Japan from October 28 to November 8, 2026, starting at ¥480. Unlike sesame-based tantanmen, it pairs a soy sauce soup with spicy oil, ground meat and sweet onions. Only 280,000 servings are planned, and sales end once they sell out. Contents Sushiro’s Fifth “Jimomeshi” Collaboration Features Katsuura, Chiba Product Overview, Sales Period and Price A Soy Sauce Soup with a Punch of Spicy Oil The Origins of Katsuura Tantanmen What Is the “Jimomeshi” Project? Previous Jimomeshi Releases About Sushiro Summary: 280,000 Bowls of Jimomeshi at Sushiro Nationwide Sushiro’s Fifth “Jimomeshi” Collaboration Features Katsuura, Chiba Akindo Sushiro Co., Ltd. (headquartered in Suita, Osaka), operator of the conveyor-belt sushi chain Sushiro, will launch Karauma Katsuura Tantanmen (“Spicy and Savory Katsuura Tantanmen”) at Sushiro restaurants nationwide starting Wednesday, October 28, 2026. It is the fifth installment of the “Jimomeshi”