O'Lewin is a silent and autistic boy. His nature makes him fear crowds. He always thought that his life would disappear quietly like this. But fate played a trick on him. Once you travel through time, you will no longer be human. There is nothing surprising about the fish-tailed body. Living is just for the sake of living. There is nothing different on land or in the ocean. On a full moon night, he basked in the moon, hummed a tune, and lived a leisurely life. However, a storm broke his peace. He had to give up the dangerous and exciting ocean life and return to land to start his adventure career. . . . . .