Tachibana, the new part-time worker, looks young, but she's 10 years older than me and married. I went out drinking with her, who was apparently having a fight with her husband, and we hit it off, and without either of us inviting her, we ended up having an affair. Even after the alcohol wore off and we both came to our senses, our sexual desires were uncontrollable, and we continued having sex many times after that. Having sex at home wasn't enough, so we secretly made love in the shop's bathroom and back yard. My co-worker Lin seems to be starting to notice our relationship, but she still can't break off her affair with Tachibana...