Mirai works as a teacher at the same school as her husband. Her younger brother is a student there. In this special family environment, Mirai engages in a forbidden physical relationship with a student. Even within the school premises, with her husband or brother nearby, she stifles her moans during intercourse and reaches climax. If caught, everything would be over. The thrill of it causes her to lose her morals as both a teacher and a wife…
