Chapter Text
Soulmates have existed for a long, long time.
No one knows exactly when the concept of soulmates started, but there are many books and pictures to prove the words. Soulmates are real. However, the term "soulmate" isn't the only thing that makes up the story.
Soulmates can feel each others pain. Literally.
At the young age of five, everyone feels the pain of their soulmate. Whether it be the enthusiastic youth tripping and scrapping their knee or even smashing a pinky toe against the edge of the table, the other half will feel the pain. The other part is meeting the soulmate.
One touch is all that is needed.
When a pair of soulmates touch each other, the sensation is there. A tingling sensation coursing through the body. It's electrifying, it's prominent, it's different from any other sensation...
But in a split second, it's gone.
Where ever the soulmates touched, there will be a marking. A simple shape with some sort of color. A triangle colored red. A square with neon green. No soulmate mark is the same.
That's the concept of soulmates.
Of course...there's a dark side to all lovely things.
If a soulmate happens to hurt the other one, the pain is like no other. There were stories about people who have fainted because of the unbearable pain. Some never recovered from any injuries.
There are the unfortunate who have soulmates who are on the verge of death or who live for the thrill of certain death.
And if they're anything like Tsukishima... there is a person out there who's soulmate is a part of a dangerous career.