Choi Mochimazzi, a fortune teller from Dera's homeland, comes to stay at Tamako's house, revealing that both she and Dera come from the island's royal family. When Choi becomes annoyed by Dera gaining weight and forgetting his mission to find a bride for the island's prince, he claims he is being held against his will, leading her to be distrustful of the good will Tamako and the shopkeepers show towards her. As Choi tells fortunes as a mean's of paying back everyone's kindness, shopkeeper Sayuri Yumoto reveals she is getting married, much to the dismay of tofu shop owner Tomio Shimizu, who had a crush on her. This leads Choi to think about her own unrequited feelings for the prince, leading to her getting a fever after passing out in the bath. After Tamako helps her overcome some of her homesickness, she becomes a bit more accepting of everyone's kindness.

With the school cultural festival approaching, the Baton Club manage to get a key timeslot for the main stage. However, Midori struggles to come up with some choreography for their performance, finding herself unable to admit it to Tamako and the others. As Midori becomes more stressed, leading to her catching a fever, Shiori mentions to Tamako and Kanna about Midori's worries. The next day, Tamako and the others visit Midori after hearing about her fever, she admits that she had been unable to come up with any choreography and is overcome with guilt. After Dera cheers her up by performing an amusing dance, Tamako, Kanna and Shiori help Midori come up with choreography, managing to come up with something come the day of the festival. As Choi comes to the school to give the club her support, she notices a particular mark on Tamako's neck, later announcing to Tamako that she is destined to become her prince's bride.