*spoilers*

A young boy with dark hair and a yellow shirt stands on a wooden deck under a stormy sky, facing a large, muscular figure with white hair and a red and black outfit, who is shown in a fighting stance; the boy's expression shifts to wide-eyed fear, then the scene cuts to a blue-skinned woman with spiky blue hair looking distressed, before returning to the deck where a massive, swirling column of water erupts from the ground, sending debris flying as the boy runs away and the woman raises her arm in alarm.