FSDSS-477 During overtime, a female employee named Natsu Igarashi was subjected to weekly breast harassment by her most hated boss, which improved her sensitive body condition to the point of immediate orgasm.

Natsu, who is sober and inconspicuous, has a timid personality that cannot be refused. One day, she confesses to Sato, who is in the same department, and they start dating. She usually wears plain glasses and has unkempt hair, but the department manager sees Natsu who finds her attractive, and the next day, her excessive sexual harassment begins. Natsu, who can’t refuse, gradually develops breasts and immediately falls into pleasure as she is trained in her constitution.