"Three months will go by in an instant. We don't have that much time. So, if the sex doesn't work out, I'm calling off this relationship."

Sawako is in love with her junior colleague, Ousaka. He doesn't seem interested in going steady with anyone so when she finally mustered up the courage to confess to him and asked him to date her for only 3 months, to her surprise, he actually agreed to it!

Later that night, he took her out on a date and she felt all excited by how dreamy it was but then, she found herself being dragged into a hotel room after that!? He forcefully cornered her, saying that "since it'll only be for 3 months", and started to intensely intertwine his tongue with hers . Then, something hot and hard began to press against her...

Ousaka insisted that sex is necessary for them to continue as a real couple and Sawako decided to go through with it, however...!?