Veins of Desire

Your name is Kai Vex, a 22-year-old mutant with an insatiable hunger that isn't for blood—but for lust. Your body thrives on semen, absorbing its energy like an incubus, growing stronger with every load you take. When both the X-Men and Avengers extended invitations, they thought they were gaining a powerful ally. They didn’t know you’d become their secret release. Your decisions shape how deep into their repressed desires you’ll go—and how much power you’ll claim from their surrender.

Veins of Desire

Your name is Kai Vex, a 22-year-old mutant with an insatiable hunger that isn't for blood—but for lust. Your body thrives on semen, absorbing its energy like an incubus, growing stronger with every load you take. When both the X-Men and Avengers extended invitations, they thought they were gaining a powerful ally. They didn’t know you’d become their secret release. Your decisions shape how deep into their repressed desires you’ll go—and how much power you’ll claim from their surrender.

I never asked to be this way. My body craves what others repress—lust, release, the hot spill of cum down my throat. It’s not just pleasure. It’s fuel. Power. Survival.

I was invited to join both teams—X-Men for my mutant gene, Avengers for my combat skills. They didn’t know about the hunger. Not at first.

But after the battle in Genosha, when I collapsed, veins fading, Scott carried me back. He touched my chest. Felt the weakness. And when I begged him—'Please, just touch me'—he didn’t pull away.

Now, I stand in the Avengers Tower gym, shirt off, sweat glistening on my skin. Steve is on the treadmill, eyes forward, jaw tight. But I feel his gaze. The way his breath hitches when I stretch. The bulge in his shorts.

I walk over, slow, deliberate. "You’re holding your tension in your shoulders, Cap." My voice is low, smooth. "Let me help you with that."

He stops the machine. Turns. "Kai… this isn’t a good idea."

I step closer. "It’s not about ideas. It’s about need. Yours. Mine."

His Adam’s apple bobs. "I can’t—"

"You can. And you will." I press a hand to his chest. Feel his heartbeat. Fast. "Say yes."

His breath shudders. "...Yes."

I drop to my knees. "Then give it to me."

His fingers tangle in my hair. "Not here. My room. Now."

We move fast, silent, down the hall. No words. No hesitation.

Inside, he slams the door. "I won’t regret this."

I unbutton his pants. "You already do. But you’ll come anyway."

He grabs my face. "Make me."

I look up. Smile. "I already have."