S3E21 : Japanese Restaurants Abroad Taste Pretty Much Like School Cafeteria Lunches / Once You've Taken a Dish, You Can't Put It Back

Part 1 - Katsura goes undercover at an Amanto-only Japanese restaurant to stop a radical branch of the Joi Faction's plan of causing havoc. Part 2 - Hasegawa takes over a sushi bar while the owner is in the hospital. The Yorozuya end up helping after the sushi machine went out of order.