Soulmates, this is something that about forty percent of the population have. One's soulmate is usually denoted by a mark somewhere on the body, generally on the torso. The mark resembles a tattoo, one part in full color the other part is a silhouette. It is known that the silhouetted part of the image is meant to represent the one on which the mark is placed, so the image is reversed on their soulmate. How the symbols are decided or why they appear where they do, those are questions that have yet to have answers.
A young Izuku Midoriya is straining to look at his back in the bathroom mirror. The four year old turning in circles back and forth as he looks over his shoulder trying to see the mark on his back.
"Mama, Mama, what is it, what does it look like?"
"Hold still Izuku, let me see it." Inko smiles as she finally manages to steady her son and take a look at his back. However, taking a closer look as she tries to find the words to find the words to describe what she sees. Her eyes widen a bit when she sees two matching marks on her son's back, Both are on the left side of his back, spaced evenly near where the young boy's heart would be.
"Oh, hmm, well let's see, there's a heart and a crown around the silhouette of a sword."
"Really! So I'm the sword, right?"
"Mhmm, but there's not just one mark, there's two."
"Two?"
"Yes, it means you have two soulmates."
"Two soulmates?" Izuku looks up at his smiling mother, a grin slowly spreading over his own face. "Do you think they'll like me, even if I don't have a quirk?"
"Oh, Izuku." Inko's smile softens into something just slightly sad. "I'm sure they'll like you no matter what, that's what soulmates do."
"Mama, do you have a soulmate?"
"Yes." Inko raises her shirt a bit to show off two chess pieces side by side just above her pant line. "I haven't met him yet, but one day,"
"It's not Papa?"
"No." Inko's smile almost slips thinking of her husband. Hisashi had been coming home less and less since Izuku was diagnosed as quirkless. The last time he had come back Inko had found divorce papers in with his dirty laundry and confronted him about them.
"Do you think it will take a long time for me to find mine?"
"I don't know Izuku. I hope you'll find them sooner rather than later though. Come on, let's get you to bed."
"Mom!"
"Katsuki, what is it?" Mitsuki Bakugou walks into her son's room to see him alternating a stare between his palm and his chest.
"It won't come off." The small boy tries to rub at the marks on his hand and chest. "What are they?"
Mitsuki stares for a moment before kneeling down and taking his hands into her own. "They're your soulmate marks, they'll help you find the person, well persons, who will love you forever, no matter what."
"Soulmates, what are those?"
"They're someone that you're destined to be with." Mitsuki takes one hand from her son's and points to the mark on the other palm of the hand she is still holding. "This will help you find them. See, one is the sword and one is this crown."
"But there's a heart in there too?"
"That's for you. See how it's blacked out, that's because it's your mark, your soulmates will have it in color."
"I don't want to be a heart, it's girly!" Katsuki glares at the mark on his hand, setting off a few small explosions over the mark in an attempt to change it.
"Don't do that you brat." Mitsuki glares at her son as she let's go of his hand in order to avoid getting burned. "Come on, you need to finish getting ready for school."
"Mama?"
Yukina Todoroki turns from washing dishes to see her youngest child standing in the doorway to the kitchen. "Shouto? What is it? Is something wrong?"
The small child stand nervously in the doorway, fingers twisting in the hem of his shirt as he bites his lower lip. "Mama, I can't," As tears well in the child's eyes Yukina sets aside her washing and quickly dries her hands before kneeling down in front of him.
"Shouto, what is it? Are you hurt?"
"I tried to wash them off, but they won't go away."
Confusion comes over Yukina's face as her son continues to twist the hem of his shirt in his hands. "Wash what off?"
"The marks, I didn't draw them. They just showed up and I don't know what they are."
"Marks? Shouto, can you show me?" It takes a long while before the small child nods and lifts his shirt to show off two soulmate marks, one on his shoulder and the other in the center of his chest.
"Oh, Shouto." Carefully she brings the hem of his shirt down once more and pulls him into a tight hug. "Those marks will help you one day find your soulmates."
"Soulmates?"
"They will be very nice people that will care for you no matter what."
"They will?"
"Yes, but you can't show your father. If he found out, he'd never let you meet them."
"I want to meet them though Mama. When can I?"
"I don't know sweety, they'll be looking for you as well though, you just need to have faith that they will find you or that you will find them."
"Ok Mama, I will."