Nana, who joined a first-class company, is busy and has put her boyfriend's marriage proposal on hold. He was planning to propose to her again on her birthday and give her a ring, but... Nana crosses the line at work with Takeda, a colleague who she has feelings for and who she works overtime with. Nana is so sensitive that she climaxes many times with the cock that penetrates her deeply, and she forgets her boyfriend in pleasure and gives him a blowjob in the office, and has an affair in a hotel where she cums over and over again... Nana becomes worried about her boyfriend who doesn't answer her phone... A heart-rending, disgusting cuckold!