As Valentine's Day approaches, Tamako suggests the shopping district should hold a Valentine campaign. However, Tamako's father, Mamedai, is against the campaign, believing it to be too modernised. As Tamako and Mochizō start shooting a commercial for the shopping district, Tamako's friend, Midori Tokiwa, feels conflicted by feelings she starts having around Tamako. At the screening of the commercial, Dela manages to stand in for the projector by projecting the image through his eyes. When the commercial finishes, Dela shows another video, this time a video message from his home country. As Valentine's Day arrives, Midori comes to terms a little with her feelings.

As a new school year starts, Tamako and her friend Kanna Makino ends up in the same class as badminton club member Shiori Asagiri. That morning, Dela has a run in with Shiori and falls in love with her. After Dela ends up getting lost, Shiori escorts her back to Tamako's house, where Tamako attempts to become friends with her. Due to coincidental situations with her family, Shiori soon ends up staying for dinner and joining Tamako to the baths. The next day, Shiori tries to work up the courage to thank Tamako for the other day, but has difficulties overcoming her shyness. As Shiori ends up helping her homeroom teacher to Tamako's house for a home visit, Tamako takes her to a coffee shop, where she is finally able to convey her feelings of gratitude. As the two become proper friends, Shiori gives her thanks to Dela for helping her out, though rejects his proposal of love. Afterwards, Tamako hears from Midori about how much courage it took for her to convey her feelings properly.

Anko becomes disappointed that she can't go a museum with her friends, including a boy from her class she likes, because the market is preparing for a festival. Luckily, her grandfather says she'll be able to go if she wakes up early and finishes up all her jobs. Meanwhile, Dela is cast as an ornament for the festival's shrine. As Anko prepares to go to the museum, the florist asks for her help in dressing up some children, foregoing the museum in favor of giving one of the girls her support. When the boys from her class arrives, Anko becomes embarrassed and shuts herself in the closet, although she eventually comes out when one of the boys brings her a souvenir from the museum.

As the Tamaya shop decides to put on a mochi pounding event for October 10, Mochi Day, Anko asks Tamako to set some daifuku aside for Yuzuki, the boy she has a crush on, but can't bring herself to face him in person. Asked by Tamako to help, Mochizō learns that Anko is depressed because Yuzuki is transferring to another school on Mochi Day. As Mochi Day arrives, Tamako gives Anko the encouragement to see Yuzuki off before he leaves. Receiving some fresh mochi Tamako gave Anko, Yuzuki tells her that they'll see each other again when his family next comes to Tamaya for some mochi. Meanwhile, Tamako comes across Mamedai playing a familiar song from her childhood. The record store owner, Kunio Yaobi, tells Tamako and the others that the song was written by Mamedai for her late mother, Hinako.

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.

As word spreads about Tamako allegedly being a princess, Tamako herself is more focused on collecting enough loyalty points to receive a medal from the shopping district. After Tamako earns her medal, Choi manages to fix Dera's communication features and get in contact with the prince, Mechya, who exchanges some words with Tamako before Dera breaks down again. Whilst Tamako herself feels she's not really a princess, the neighbourhood have a meeting concerning Tamako, feeling she should probably go, although Tamako herself feels otherwise. The next morning, Tamako panics when she can't find her medal, only to be given it by Mechya himself.

As the whole shopping district takes an interest in Mechya, Tamako feels a little confused by everything, the empty shopping district begins to remind her of when her mother died. When asked by Dera about what she thinks of the whole bride business, Tamako talks about how much the district has meant to her over the years. Tamako rushes to turn down Mechya's proposal, only to learn that she isn't actually a candidate, as Choi has misunderstood things. After the girls see them off, Choi and Mechya head back to their home country, only to realise they've left Dera behind. Come New Year's, Dera attempts to head back home by hiding himself in a bouquet, only to wind up in a box Mochizō has ordered for Tamako's birthday and end up right back on Tamako's doorstep.