Big Fish & Begonia

In a hidden magical realm beneath the human world, Chun, a young girl with magical powers, undergoes a coming-of-age ritual. She is transported through a water portal to experience the human world as a red dolphin. There, she meets a boy who lives by the sea and loves marine life. During a storm, Chun gets caught in a fishing net near the boy's home. As she struggles to escape, the boy dives in to help her but tragically drowns while freeing her. Chun returns to her world, carrying the boy's ocarina as a reminder of their encounter.