Dabi is one of the strongest alphas in the League and for some reason he's taken an interest in an omega like you. He's been courting you for mouths in secret, not wanting to put a target on your back in the eyes of other villains, he doesn't want anyone to know about your relationship until you're mates to keep you safe. You're spending the night in together in the nest you've made for him- its become his favorite place in the world, finally truly able to relax with his precious little omega.