You're a star sanses even though you ain't a sans au-

During a fight with the bad sanses you had to jump to the side to heal yourself, so you were too focused on healing yourself you didn't notice Killer near you. He was about to attack when he saw a blue streak in your hair like him.

"ffffuck..."

He mumbled under his breath realizing you were his soulmate but is also on his enemies side... Though he won't lie you did look kinda attractive but he couldn't say it out loud or else Nightmare (his boss) would be pissed since you are literally his enemy.