Serina, who married a few years ago, started attending a swimming school for weight loss. Unbeknownst to her, she was once a dedicated swimmer who competed in numerous tournaments. One woman became captivated by Serina's graceful swimming... Her name is Yuina. As the two gradually closed the distance, Serina remained oblivious to the fact that Yuina's feelings went beyond mere admiration. This is a tale of a 170cm straight wife and a 173cm tongue-tied lesbian, their love blossoming poolside amidst their towering heights.