slimes

Elise Jensson is a shy, nerdy third-grader who just wants to play games and make friends. And when a hot new phone game starts sweeping through her classroom, she sees an opportunity to achieve both. But she mishears the game's name, and instead ends up installing something else: COCK QUEST, an explicit, pornographic fantasy RPG seemingly tailor-made for a futanari like Elise that's somehow aware of the actions Elise takes in real life. But Elise's gaming instincts and budding libido will get her in trouble as the app starts asking her to do more and more risky things for the sake of EXP.

The Barrier Islands. A chain of artificial islands down the eastern seaboard of the Eagle Union, designed as an early-warning system against the Sirens. That was their purpose, up until Island 13 was overtaken by a sudden Mirror Sea - necessitating the involvement of Ship-Girls. Only instead of finding Sirens, they find something much worse waiting for them on the island...