OVA: "Build-Up of Early Spring!"
Ep. 1: "Sprouting Dive Start!"
Ep. 2: "A Promise on a Shooting Star!"
Ep. 3: "First Swim in Another Country!"
Ep. 4: "Interference of Loss!"
Ep. 5: "An Ominous Workout!"
Ep. 6: "The Mermaid of the Abyss!"
Ep. 7: "A Solitary Medley!"
Ep. 8: "Metamorphosis of the Soul!"
Ep. 9: "Interval in the Evening Calm!"
Ep. 10: "The Grab Start of Hope!"
Ep. 11: "Streamline of Unity!"
Ep. 12: "Dive to the Future!"