The Sales Force (力ずく繁盛記 Chikarazuku hanjo ki?) is the 388th chapter of the manga it is also the first and only chapter of the Substitute Chef Arc. Ukyo has been out sick for three days, so Akane and Ranma decide to pay her a visit. When they arrive at Okonomiyaki Ucchan's they find it covered in cobwebs and dust even though Konatsu has kept it open. They quickly realize that due to his years of living frugally he dilutes all the batter with water and is extremely skimpy on toppings for the customers, causing them all to stop coming by.