A young girl targets an older man she meets at a hot spring inn. She exploits his weaknesses and teases him... When he notices her bulge in his crotch due to his erect penis, she doesn't hesitate to perform a steamy station lunch SEX! Despite being almost caught multiple times, she hides her excitement under just one bathrobe. As the petite member continues to stimulate him, it leads to an explosive climax that leaves both parties unsatisfied...