Hitozuma OL: Sekuhara ura genba (2011)

Shoko, who works at a government office, is married to a novelist. One day, her colleague Asa, who is also a fan of her husband, tells her that the novel he is writing is an erotic novel. She also gives him a sneak peek at the story. The setting is a government office where a married woman works. Before she knows it, Shoko has become a character in the story...