Yukino Yukinoshita resolves to increase her independence by taking the crucial first step of reconciling with her parents. With graduation approaching for the third-year students, student council president Iroha Isshiki suggests teaming up with the Volunteer Service Club to organize a prom. Yukino eagerly accepts, seeing it as a chance to demonstrate her self-sufficiency, but the task is not without its challenges. In Yahari Ore no Seishun Love Comedy wa Machigatteiru. Kan, emotions run high during the prom preparations, leading the Volunteer Service Club to deepen their understanding of one another. As a result, Hachiman Hikigaya's eventful and emotional high school experience comes to an end.