During his challenging summers, Kamachi's routine changes when he encounters Suzuya, the assistant swim coach at his brother's school. A simple gesture of offering a bottle of ramune leads to Kamachi frequenting the pool more than expected. As the summer swim class nears its end, Kamachi finds it harder to hide his feelings for Suzuya behind his summer fever blush. With emotions simmering just below the surface, it's only a matter of time before everything bursts forth in a sparkling display.