Nanako’s dad, eager to assess his daughter’s “Yankee” friend (and threatened by expressions she makes when he brings him up), tells her she should invite Eiji to the house during summer vacation. When Eiji sees her text, his phone slips out of his hand and into his ramen.
While waiting for repairs at the store, he ends up having chance encounters with Koto (handing out tissues), Amane (trying/failing to look sophisticated at a cafe), Tao (dressing down for the summer) and Kino (carefully observing a mailbox but drawing a gorilla detective).
He observes that he’s managed to run into everyone today…except the one person he wants to see most. Turns out he saves his best chance encounter for last; the wind blowing her straw hat onto his head. Eiji admits he was thinking about her, missed her, and wanted to see her; Nanako admits she felt the same way about him.
With that, it’s off to Nanako’s house, where her dad is dressed in a traditional kimono and is poised to bare his chest and pounce on Eiji should he put a toe out of line. Ultimately, when he asks Nanako if she’s okay with Eiji’s affirmative answer to the question “are you just friends”, and sees her expression, all the energy drains out of him and Nanako and her brother have to help him to bed to lie down.
That’s when Nanako’s much more accepting mom has a one-on-one chat with Eiji. She explains her husband’s protectiveness as a result of how seclusive and melancholy she used to be, since she was bullied for communicating via senryuu.
That is, until one day, she came home cheerful and beaming, having met someone else who loved senryuu; the first person not in her family “she’d want by her side.” Eiji knows she’s talking about him, and Nanako is listening in the hall, but he doesn’t admit it’s him, and instead rushes off to grab his repaired phone.