Jun is a male siren who is also similar to a mermaid, because his mother is a siren and his father is a mermaid. Since childhood, Jun was told that life outside the sea was not good for him, and was a place that Jun was forbidden to visit. Even so, Jun's friend said that life outside the sea was very beautiful and fresh, managed to persuade Jun not to believe what his parents said. Since then, Jun has often been at sea level to see the life that exists.