Love Knot (Kuroo x Yachi)

The world of soul mates is very easy to understand.
~ You get your string, eventually. And get a timer on your wrist. Your string will disappear in a 3 meter radius of your soul mate. The timer will turn red when in 5 meter radius, pink in a 2 meter radius, and white when they're right in font of you. And when you guys get farther away from each other, the timer will reset until you meet again, and the string will come back. But each time, the string is a different color depending on what you guys do together the next time you meet.
Red - first meeting
Maroon - first kiss
Pink - a date
Purple - making out
Yellow - lemon/smut
Gray - a fight
White - marriage
Blue/Green - children
You also feel each others pain and hear each others thoughts depending if your relationship is strong or not. But if you can feel each others feelings then, the match maker made you relationship strong.

Simple, right? And for most people they can easily fall in love with each other. That's practically everyone, well everyone except ... Yachi. She is the by far one of the only people who question the match maker.