故事的舞台设定在未来的日本，为了解决少子化的问题，政府禁止了自由恋爱，改为由政府全面接管的状态。每一个青少年长到16岁，便会由政府分配一名伴侣作为恋爱的对象，这是经过了精密的计算所匹配出的最佳人选。根岛由佳吏（逢坂良太 配音）是一名十五岁的少年，无论是性格还是样貌都非常普通的他内心隐藏了一个秘密，那就是他从小学期就默默的喜欢着名叫高崎美咲（花泽香菜 配音）的少女，然而，这份爱恋在这个扭曲的社会里却是违法的。 真田莉莉奈（牧野由衣 配音）是政府分配给根岛由佳吏的完美女友，然而，当她得知了根岛和美咲之间的感情后，决定帮他们隐瞒秘密，全力的支持这份美好而又纯洁的恋情。Lies are forbidden and love is doubly forbidden. In the near future, when young people in Japan turn sixteen, they are assigned a marriage partner by the government. People don't have to go through the trouble of looking for someone, and everyone accepts that the country will find a compatible partner to make them happy. Yukari Nejima is fifteen years old. He lives in a small corner of the country, and just can't seem to get ahead in life. Both academically and athletically he's below average. But within him, he hides a heart burning with passion. In this world in which love is forbidden, what will happen to him when he falls in love?
