A year has passed since Arika earned her Otome powers, and the world has found fragile balance. Nations prepare peace talks aimed at controlling the number of Otomes in existence, a move that threatens the very foundation of Garderobe academy. Then disaster strikes on multiple fronts: a meteor threatens Earl, a mysterious attacker targets Otomes worldwide, and a deadlier version of the Slave weapon emerges. The chaos escalates when Queen Mashiro vanishes after a heated confrontation with Arika, leaving the girl consumed with guilt and desperate to find her. What begins as a personal search quickly spirals into something far larger, forcing Arika and those around her to confront uncomfortable truths about power, responsibility, and the cost of peace. As shadows close in from all directions, the line between ally and enemy blurs, and everyone at Garderobe must decide what they're willing to sacrifice to protect those they love. The OVA unfolds as a tense thriller where action sequences punctuate moments of genuine emotional weight, delivering closure to lingering questions while raising new ones.