B.B. Fish

Synopsis:

According to legend, on a midsummer night the blue butterfly fish appears in a dragon's mouth near a tropical paradise. Ushio, Sara and their friends are in search of the fish, but even after multiple dives they're unable to find it. However, soon after Ushio and his friends encounter two women who seem to know about the blue butterfly fish. Will Ushio find what he's looking for?