Hachiman tries to relax during summer break, but is continuously interrupted by a string of texts and calls from Shizuka, all of which he ignores, while at the same time, deducing that her constant nagging is a contributing factor as to why she remains single. Eventually Komachi gets Hachiman to take her out to Chiba, which turns out to be a trap by Shizuka to make Hachiman come out. Along with Yukino, Yui and Saika they head over to the Chiba Mura Park where they also meet up with Hayato, Yumiko, Kakeru and Hina. Shizuka then explains that they will all offer counseling services to an elementary school camping trip as well as providing a good opportunity for Hachiman and Yukino to interact with people from other social cliques. As the activities begin, the Sōbu High group remarks on the differences between high and elementary schools. Meanwhile Hachiman and Yukino immediately notice Rumi Tsurumi, a middle school loner, being shunned outright by her classmates. While they remark that there's bound to be loners where ever there are social groups, Hayama uses his charm to sway the other kids. Soon enough, as everyone helps prepare lunch, Hachiman and Yukino observe Hayama's failed attempts to talk to Rumi, while Hachiman outlines to himself the circumstances for trying to talk to loners as well as their appropriate responses. Rumi walks away and heads towards Hachiman and Yukino's location and after introducing themselves, she explains how the social disparities in her elementary school affect her, and resolves to make friends in middle school, although Yukino explains that the flaw in her plan is that since Rumi will end up in the same middle school as those ignoring her now, that behavior will likely be adopted by the new students as well. Afterwards, as the Sōbu High group finish dinner, they discuss Rumi's circumstances and try to come up with ways to help her, although in the end they can't reach a consensus. Yumiko even states that the reason Rumi is ignored is because she looks down on everyone else just like Yukino, but Yukino counters saying that the only reason Yumiko would think that is because she herself believes she is inferior. Later, Hachiman, unable to sleep, heads out of his cabin and finds Yukino out stargazing. Yukino explains that she inadvertently made Yumiko cry after spending thirty minutes refuting her arguments and also tells him that she wants to help Rumi because she reminds her of Yui and that Hayama's inability to do anything for her may be bothering him. As Hachiman asks about Hayato, she explains that she knew him since elementary school and that his father is an adviser to her family's company, finally saying that she's glad she was able to come to the park and leaves for bed. As Hachiman, looks at the stars, Rumi is seen squatting alone by the riverbank.