During a quiet Saturday in the U.A. dorms, the students are relaxing together when Aizawa unexpectedly arrives to announce a new transfer student joining their class and living in the dorms. Y/N enters shortly after—an eighteen-year-old with calm precision and strong control over herself, quickly drawing attention from her new classmates. Among them is Bakugou Katsuki, who immediately recognizes her as someone from his childhood: his former best friend, rival, and first unspoken love who disappeared when they were ten years old. Their sudden reunion reawakens a shared past shaped by competition, closeness, and unresolved history, hinting that their connection was never truly left behind.