Karkat's words caused a flicker of confusion to cross Kanaya's face. His illuminated face was so terrified. Why...? She moved forward a few steps to rest her hand on his face, unable to articulate her worry but wanting to fix his problems all the same.

The scent of blood wafted up. Her pupils dilated once more and she breathed in heavily, and this time Karkat got to see the primal change in detail. Her grip tightened around his head and she lowered her mouth past his petrified gaze to his neck, fangs sliding their way into his skin like butter. She took one, two sucks, and relished the feeling of blood down her throat, closing her eyes, relaxing into the sensation. She was beginning to feel incredibly drowsy...

Her body gave out and she dimmed, collapsing on Karkat, jaw slack on his neck.