When her son Shin was in elementary school, Ayano lost her husband and raised him single-handedly. She began to consider remarrying with her company superior Miyakawa upon Shin's college entrance... On the other hand, Shin, who had special feelings for his mother, couldn't bring himself to get along well with Miyakawa despite wishing for his mother's happiness. One night, guided by Ayano's breathing in her bedroom, Shin enters. Seeing his mother's breasts exposed as she turns over, he gently runs his fingers over her skin.
