Teruko is a 28-year-old office worker. 5 months ago, she fell in love with Mamoru at first sight. Since that time, she has not cared about her work or her friends. She then loses her job and her friends look at her coldly. Yet, Teruko is happy as long as she is with Mamoru. Meanwhile, Mamoru thinks Teruko is an easy woman for him to not love. Teruko’s unrequited love grows deeper.
After getting dumped by her boyfriend Kentaro, Tomita Momo, who works at a library, suddenly discovers the existence of her ex-boyfriend's current girlfriend Riko through his social media. She is intrigued by Riko, who is the opposite of herself in terms of fashionable sophistication. For "a certain reason," she goes to see Riko in person. Momo confronts Riko and asks, "Do you know what revenge porn is?" And "I want to get back the secret photo data of the two of us that he took... Also, haven't you been taken as well...". An ex-girlfriend and a current girlfriend. Now that these two unlikely lovers have met, their "secret complicity" is about to begin.
