Aika had two faces. One was her public face as a strict teacher. The other was her private face, enjoying an affair with her student. Aika intended to continue to enjoy using both faces. However, the student, emboldened by her immoral relationship with Aika, began to seek a relationship at school as well... It was a dangerous school affair that would end if it was discovered. Aika was unable to control her student's rampage and desperately tried to hold back the voices that leaked out as she silently climaxed.