A married woman named Yui has a serious salaryman husband. Her brother-in-law is unemployed and staying at his parents' house while job hunting. Watching the happy couple, her brother-in-law stews in frustration at home, finding Yui's body incredibly dazzling. On a sweltering tropical night, he sees Yui sleeping with her sweat-soaked cleavage exposed, and his desire surges forth with his sweat...
