"Come again for me. Let me feel both of you break on my cock." As I said those words I felt something strange, a molten surge racing under my skin, like liquid sunlight pouring straight into my veins.
My vision sharpened, the edges of the chamber glowing gold.
Mephistopheles froze mid-thrust, her eyes widening as a mark blazed across my chest: a radiant golden bow with an arrow piercing a heart, pulsing in time with my heartbeat.
"W-what the hell is that…?" she rasped, voice cracking between demonic growl and Isabella's trembling whisper. I didn't answer. Couldn't. The power flooding me was too intoxicating. My hips snapped forward, burying myself to the hilt in one brutal stroke.
PLAP!
Her whole body jolted. A strangled cry tore from her throat (half Mephistopheles' snarl, half Isabella's broken sob)."N-no—! That mark—!"
