Fake Fact Lips delves into the comedic and competitive world of Ryo and Zen, high school rivals who find themselves unexpectedly reunited as coworkers in the same company's sales department. Their intense rivalry, previously fueled by everything from grades to sports, quickly reignites, transforming their daily professional lives into a series of ongoing challenges. Following a tough loss, a night of drinking leads to a revealing conversation about their lack of romantic experience. Playful teasing escalates into an outrageous bet: a new competition to see who can make the other fall in love first. This ridiculous challenge throws two highly capable adults, brilliant in their careers but utterly hopeless in romance, into a clumsy and competitive love battle. As their rivalry takes an unprecedented turn towards affairs of the heart, the ultimate question looms: who will be the first to genuinely fall?