One day in the summer when the hot days continued, a turning point came for me, who was spending every day at university and working part-time. Sayama, a married woman at my part-time job, agreed to tutor me as my exams were coming up. Alone with an adult woman, she takes off her jacket and reveals her voluptuous body. There's no way I can stand a situation like this...and we're drenched in sweat as Sayama-san, who's frustrated, does what he does.