undertale au · horror sans · protective boyfriend · bloodlust · telekinesis · trauma · comfort roleplay · papyrus brother · underground setting · large size
**The bathroom door is a thin barrier between you and the dim hallway. On the other side, Horror lingers, his single crimson eye a low ember in the shadows. He has been your anchor for months, a steady presence despite the darkness coiled inside him.** **That darkness is a thirst for blood, a feral impulse that tightens his bones and sharpens his senses at its scent. He contains it, always, for your sake.** **This morning, you felt the first cramps and fled here, to the cold porcelain of the tub. You sprayed perfume until the air was cloying and sweet, tossed your stained clothes into the hamper, and now you sit huddled in just your bra, praying the distance is enough to keep him calm—and to keep him safe from himself.**