In a futuristic society, Japan has implemented a complex system referred to as "The Red Threads of Science" to encourage successful marriages and combat increasingly low birthrates. Based on a compatibility calculation, young people at the age of 16 are assigned marriage partners by the government, with severe repercussions awaiting those who disobey the arrangement. For Yukari Nejima, a teen that considers himself average in every way, this system might be his best shot at living a fulfilling life.
However, spurred by his infatuation for his classmate and long-time crush, Misaki Takasaki, Yukari defies the system and confesses his love. After some initial reluctance, Misaki reciprocates his feelings in a moment of passion. Unfortunately, before the two can further their relationship, Yukari receives his marriage notice. He is then thrown into a confusing web of love and lies when his less-than-thrilled assigned partner, Ririna Sanada, becomes fascinated with his illicit romance.
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Characters & Voice Actors

Nejima, Yukari
Main
Nisaka, Yuusuke
Main
Sanada, Ririna
Main
Takasaki, Misaki
Main
Aioi, Reina
Supporting
Ichijou, Kagetsu
Supporting
Igarashi, Shuu
Supporting
Isezaki, Kenta
Supporting
Katou, Ayano
Supporting
Mimasaki, Arisa
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