B.B. Fish

At the entrance ceremony for college, Ushino Hayama unexpectedly reunites with Sara, a girl he had not seen in a decade. This encounter sparks a transformation within him, awakening a newfound ability to manipulate water. As he embraces these changes, Ushino also finds himself drawn to the world of deep-sea diving, where he navigates both the challenges of his burgeoning powers and the complexities of rekindling his connection with Sara.

Set against the backdrop of personal growth and emotional exploration, the narrative delves into themes of nostalgia and the impact of first love. Ushino's journey intertwines his aquatic abilities with his relationships, leading to moments of introspection and discovery as he learns to balance his extraordinary talents with the realities of life and romance.