Koi to Uso takes place in a Japan where young people meet their future spouses, assigned by the government, when they turn 16. With this system, the youth are relieved of the burden of searching for a partner, trusting that the state will choose a suitable match that will provide them with a happy home. Nejima Yukari is a 15-year-old living in a corner of the country, who falls below average both academically and athletically, yet is filled with passion. While it is clear that lying is wrong, in a world where falling in love is also forbidden, how will Yukari's future change when she gives her heart to someone?
