During our university club trip, we stayed at a hotel with a mixed-gender sauna. Inside the enclosed space, we saw Yuuri, known for her amazing figure and rumored to be incredibly fit, drenched in sweat in her swimsuit… As expected. Because of her easygoing and frivolous nature, I figured Yuuri would fall for the bait. Besides, those healthy, voluptuous breasts and buttocks, drenched in sweat… targeting that body was a natural outcome. “Want to do a heat wave?” Targeting the large-breasted body trapped in the stuffy, enclosed space, I injected an aphrodisiac into the steam. Using the heat wave and drug ingredients, I drove Yuuri's metabolism, rationality, and sensitivity completely out of control, until she was dizzy and delirious—a night of frenzied orgasms began.