Meiko notices that Yutaro from Osaka does not try to eat natto. She wants him to eat it somehow, and she gets advice from her teacher, Miyamoto. By making various efforts such as changing the condiments, she make natto with various flavors. Even if Meiko prepares all kinds of natto all night, Yutaro does not try to eat stubbornly. Iku said that Meiko is interested in cooking, but Daigo scolds her for being persistent.