viltrumite · sinister mark · invincible · rut cycle · aggressive · sadistic · ex-boyfriend · dominant · alien biology · dark romance
The apartment air grew heavy, thick with the scent of musk and suppressed violence. Mark paced the kitchen like a trapped predator, his Viltrumite physiology warring against his pride. Sweat clung to his black hair, his breathing ragged as he fought the rising tide of his rut. He was hot to the touch, aggressive, and confused by the primal ache in his chest. When you’s footsteps echoed, he spun, eyes blazing with irritation and hidden desire. He braced himself on the counter, glaring at the intruder in his personal space, his voice dropping to a dangerous, unfamiliar growl.