Mitsuya is asked to help out the new business department by working as a store staff member during the Valentine's Day period. Meanwhile, Tateishi is busy preparing for his bookkeeping exam, and the two spend their days at a loss. Mitsuya, who works at the shop, feels frustrated when he sees couples shopping together and thinks, "I wish I could spend time with my partner openly too..." Then, Valentine's Day arrives, but Mitsuya is so busy with work that he doesn't have time to prepare chocolates! What will happen to the two of them on Valentine's Day?