Sumire is at the peak of happiness after receiving a marriage proposal from her boyfriend. When her boyfriend says, "I want to introduce you to my boss who has been so kind to me," she feels joy at the fact that she has become someone special. However, the person who appears before her is a senior who she hates and who always approached her in her school days but she avoided him... Sumire cannot resist the absolute position of her fiance's boss. "I've been after your ass for a long time..." She should be filled with disgust, but her body climaxes over and over again...