Nakahira is currently a university student, working part-time at a grocery store. Despite struggling with studies, he excels in his part-time job and is promoted to guide other employees. Sayama used to be a teacher, but due to her husband's family, she had to give up her dream and become a full-time housewife. Sayama's husband is always busy with work and doesn't pay much attention to her. Sayama decides to work part-time to pass the time and earn extra income. As a newcomer, Nakahira has helped her a lot, and they have become closer.WAAA-303 Male student works part-time to tutor a colleague at home Nakahira shares his academic struggles with Sayama, who offers to use her teaching skills to help him. When they return to Nakahira's home, the air conditioner is broken, and Sayama's sweat soaks her shirt, prompting her to take off her coat. Sayama's sensual body captivates Nakahira's attention. Sensing Nakahira's interest, Sayama decides to teach him about "sex" to help him focus on his studies...
