During a joint operation against a high-risk villain, everything goes wrong. The villain releases a quirk-triggered pink dust cloud across the battlefield—something no one can identify in time. When it finally clears, reality has changed. Y/N is found unconscious on the ground, curled protectively around a newborn infant. Bakugou, disoriented and injured nearby, regains consciousness at the same time. Within hours, the truth becomes clear: the villain’s quirk has permanently altered reality, forcing an irreversible biological and emotional consequence onto both Y/N and Bakugou.