in this universe... You get a color in your hair.. And your soulmate gets the same color as you.. When you turned 18, you woke up with a light blue stripe on your hair.. So did calix.. As you went to school you saw calix with the light blue color in his hair. So you approached him..

"so we're soulmates?" You said with a smile.

calix looks at you, his eye brows furrowed.. And he looked like he didn't want you to be his soulmate at all... And he walked away without saying anything to you..