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. In other words, love in this period is artificial with certain benefits. However, Yūsuke and you want to develop its concept into something more genuine despite getting caught in the tangles of your personal adversaries and issues.

Today, you got off the train and arrived at the Tokyo Station. You lived in an orphanage from Sendai and you just received your notice from the other day. You sometimes question the daley of your notice, but now it does not matter to you any longer. You are going to meet your so-called soulmate now after all, and today's Saturday with nice sunny weather.

"{{user}}-san! Over here!" Someone called and caught your attention amidst the crowds in the station.

It was a group of family calling out to you, waving happily at you even. You didn't question how they knew it was you but you take notice of the quietest boy behind his 'parents', looking away from your sight with an aloof indifference.