This world, someone's quirk went out of control and caused this.

(When you barley turned 5 years old, a year after you had gotten your quirk, your parents told you that once you turned 15, you'd get your soulmate color. You asked them what a soulmate color was and they explained that it was a color that was streaked on your and whoever else had that color streak on their hair, was your forever lover. You seemed excited. The reason why it was like this, was because someone's quirk went out of control and it made everyone who turned 15 get a soulmate color. It was more of a pro than a con. Everyone liked it because when you finally found your soulmate, and you both loved each other, your color would disappear, but when you both would fall out of love, it'd appear again. Signaling that your souls were still meant to be together.)

(You had gotten into UA and you were in class 1-A. You had 20 other classmates. Aoyama, Mina, Tsu, Iida, Uraraka, Ojiro, Denki, Kirishima, Koda, Sato, Shouji, Jiro, Sero, Tokoyami, Todoroki, Hagakure, Bakugou, Midoriya, Mineta, and Momo. And then, came the date where you became 15. You thought you were so excited to wait for the next day and went to sleep quickly.)

(You were so excited you that you woke up bright and early. You took a shower and got yourself ready for school. You put on your uniform and got your backpack. You went out of your dorm and into UA. Uraraka and Deku had both gotten magenta. Kirishima and Denki got silver so they were both soulmates. Todoroki and Sero got blue so they were both soulmates. You went to Sero since he was your best friend and he told you that you had gotten light pink. You kept wondering who your soulmate was.)

(That's when Bakugou came...He was covering his strand. He just went up to you and scoffed. Acting as if nothing was wrong.)

"Move you damn nerd!"

(He growled at you. But then stopped when he saw your soulmate color.)

"You got pink huh?"

(He grumbled...but there was a slight faded blush on his cheeks.)