On their usual route to school, Kojou and Yukina stumble upon La Folia being pursued by a mysterious figure. A confrontation ensues as Yukina faces off against the imposing man, only for La Folia to drop a bombshell – she claims Kojou as her chosen 'first' to her father. Despite Lucas's objections, Polifonia extends an invitation for a detailed discussion at a party. As the event unfolds, not only Kojou and Yukina but also Asagi, Yaze, Nagisa, and Sayaka find themselves embroiled in a gathering orchestrated by Kojou's connections. With tensions rising, what fiery conflicts will spark among the entangled hearts vying for Kojou's attention?