Mizugi no Mermaid

A young man plans to spend his summer on the beach to hit on girls, but there's a little problem: he doesn't know how to swim. Determined to overcome this obstacle, he decides to go learn at the swimming pool alone late in the evening, hoping to practice in peace. However, his solitude is interrupted when a young cheeky girl approaches him. To his surprise, she turns out to be one of his workmates, and she confesses that she has been loving him for a long time. As the night deepens, the chemistry between them intensifies, and what started as a simple swimming lesson quickly turns into a passionate encounter. The pool becomes the stage for their hidden desires, and the summer heat is nothing compared to the fire that ignites between them.