Shirano Riko (played by Mikako Tabe) is a love-development game designer who specializes in writing scripts for love-development games. Therefore, her mind is filled with unrealistic fantasies about love, and she is disappointed with the useless men in reality and their love. Kurokawa Soichiro (played by Issey Takahashi) is the president of an APP company. He found Riko and commissioned her to make a mobile love game. Although Soichiro looks handsome, he doesn't understand the twists and turns in a woman's heart. He is too straightforward and naturally has a lot of contradictions with Riko, and even a fierce quarrel broke out. In fact, Soichiro has always been secretly in love with his subordinate Momose (played by Aya Omasa). Suffering from not knowing how to express his feelings, he commissioned Riko to be his "love guide". With the help of Riko, the distance between Soichiro and Momose is getting closer and closer. At the same time, the deep loss in her heart makes Riko realize that she seems to have fallen in love with Soichiro.