Yumiko Sakaki

As one of Mihama Academy's founding students, Yumiko Sakaki carries the weight of her prestigious lineage as the daughter of a powerful railway magnate, yet her turbulent past has left her emotionally fortified and deeply suspicious of others. She keeps people at arm's length through biting remarks and a box cutter she habitually carries, greeting transfer student Kazami Yuuji with undisguised hostility. Beneath her icy composure, however, lies a quietly aching longing for genuine connection and warmth—feelings she struggles to express with anything resembling grace.