A Sinner of the Deep Sea

The ocean covers about 70% of the earth’s surface―A whole world, yet unknown to humanity... And in its depths a nation, thousands of meters beneath the waves. There, the mermaid...

Jo is willing to go to any length for Ryuu, even if the whole undersea society brands her a criminal for it. And Ryuu wants to see her beloved human...

Sinner Jo and boarder guard Akira make an unlikely team―but now their shared suspicion of lord Harujion’s “Mermaid Island Operation” has brought them together for a daring mission! Sneaking into...