, short for , is a Japanese light novel series written by Yūji Yūji, with illustrations provided by Ruroo. SoftBank Creative published eighteen main novels and one extra from February 2011 to February 2022. There have been four manga adaptations and an anime adaptation by A-1 Pictures aired from January to March 2013. Plot Eita Kidō enters high school with the goal of graduating with marks high enough that he can earn a scholarship to medical school. Due to the fact that his parents divorced, found new lovers, and left him in the care of his aunt, he shuns anything to do with romance or love. One day, the school's No.1 beauty, Masuzu Natsukawa, invites him to walk home with her. He quickly deduces that Masuzu is scheming something. It turns out Masuzu is tired of being the center of attention and receiving confessions on a nearly-every-day basis, so she suggests that she and Eita become a fake couple. Although Eita objects, Masuzu blackmails him into becoming her boyfriend in name only. News of the new couple rapidly spreads throughout the school and Eita's childhood friend, Chiwa Harusaki, who likes him, begins to vie with Masuzu for Eita's affections. Characters (drama CD), Ryōta Ōsaka (anime) Eita is the main character who aims to attend medical school after graduating from high school. He is very smart and always places at the top of the school exams. He has a strong distrust for love and romance because of his parents divorcing, finding new lovers, and abandoning him when he was in junior high school, thus calling himself "anti-romance". His antipathy to romance also stems from the fact that it would interfere with his studying. It is revealed that during junior high school, he had teenage delusions and thought of himself as "Burning Fighting Fighter". However, Chiwa's accident caused him to abandon his delusions and decide to become a doctor. Despite having outgrown his teenage delusions, he sometimes backslides if he gets too emotional. (drama CD), Yukari Tamura (anime) Masuzu is Eita's "girlfriend". She is the school beauty who returned to Japan after spending nine years overseas. Like Eita, she hates romance, and is tired of receiving (and rejecting) confessions on a daily basis. Masuzu uses Eita's notebook from middle school, filled with embarrassing notes and scribbles, to blackmail him into pretending to be her boyfriend. She forms a club called "Maiden Society