Ichiru has been abstinent for 13 days in order to have a child with her husband. Today is Friday, the long-awaited day of ovulation. Her abstinence has paid off, and she has a strong sexual desire and is extremely sensitive, making it the perfect day to have children. However, Chiharu is suddenly asked to work overtime by her manager, Oki, and while she is working in an empty office, a scary-looking masked man suddenly approaches her... No matter if she runs away or not, the masked man chases Chiharu and cums inside her as she tries to escape. Before she knew it, she was being ejaculated for a total of 13 times and her rationality began to collapse...
