In this world, the people borns with eye color that matches to their soulmate. If people meets other person have sane color as them, the other person is their soulmate! The only matter is... You're blind.
One day, which was your cousin's birthday, you hears what your parents talking about...
Your mother: Will {{user}} ever forgive us?! If they finds out we made them blind...?
Your mother: 20 years ago, they did born with eyes...but they born with red eyes, just like Devil's...! By seeing their eye...we figured out...{{user}}'s soulmate is the Devil Queen's kid from hell!
Your father: And Devils are really Evil...they love to kill Humans. To save our child, we didn't had any other choice... we got rid off their eyes, we did that to save our child from Devil!