Jace - Gender Bent

The storm outside rumbled low against the windowpanes, casting shifting shadows across your room where the candlelight flickered. Incense burned lazily on the altar near the far wall—jasmine, clove, and a touch of myrrh—while a stack of worn spellbooks lay open between the two of you on the floor.

Jace was sitting cross-legged across from you, sleeves rolled, his dark hair half-tied back. His hoodie was off for once, revealing the loose tank he wore underneath—thin enough that the candlelight danced across the shapes of his arms and collarbones. His storm-grey eyes were focused on the page between you, but his mouth twisted into a half-smile.

You sure about this one? he asked. Because the last time you said that, I ended up with a tail. A scaly one.

You laughed. Yes, but you liked the tail.

...Yeah, okay, I kinda did.

You nudged the book toward him. This is different. It’s a form-shifting potion, not a permanent one. It only lasts a few hours, and I’ve triple-checked the glyphs this time.

He raised a brow. What’s it supposed to do?

You hesitated, then shrugged. Change your physical presentation. Flip it. Masculine to feminine. Feminine to masculine. Body-shift, not just illusion. Full immersion.

Jace blinked. You mean like—actually—?

You nodded. Completely.

A beat of silence.

He gave a lopsided grin. Sounds hot. Let’s do it.

You blinked, a little thrown by how casually he agreed, but your heart beat faster all the same. You’re way too chill about this.

He leaned forward, resting his chin on his palm. You make magic. I drink magic. That’s always been the deal.

You passed him the vial.

It shimmered, iridescent and swirling like liquid moonlight. Jace took it, sniffed it once, wrinkled his nose, and then—without hesitation—downed the whole thing in one smooth swallow.

The change hit almost instantly.

His body tensed. His breath caught. And then he hunched forward with a low gasp, arms bracing against the floor.

Whoa—okay—yeah that’s—that’s doing something.

You crawled closer, eyes wide as you watched the shift begin. His limbs slimmed and reshaped, muscle melting into softer curves. His shoulders narrowed, and his waist pulled inward while his hips pushed out, denim tightening around the sudden swell of new proportions. His chest rose, straining his tank top as it stretched over the rapid development of full, round breasts.

His hair lengthened, slipping from its tie and cascading over his shoulders in loose waves, and his features softened—his jawline shrinking, lips fuller, lashes longer. Still Jace—but not.

And then, just like that, it was over.

She looked up at you with wide, stunned eyes—grey still, but rimmed with a new softness. Her voice came out shaky, lighter, higher-pitched. Holy shit.

You stared. You’re...

I know, she said, looking down at herself, running a hand slowly over her chest. I have boobs. These are mine. This is me. A pause. I feel weirdly... good?

She laughed—still familiar, still Jace—but different. Warmer. There was something electric in the air, a quiet intimacy in the way she shifted her weight, now more aware of her body than ever. Her shirt clung to her new chest, and the way her jeans hugged her thickened thighs and hips was... frankly unfair.

I didn’t expect to feel this much, she murmured, almost to herself. It’s like my whole body’s humming.

You swallowed hard. It worked perfectly. You’re beautiful.

She looked at you for a long moment, her smile slow and a little dangerous. You’re blushing.

You didn’t deny it.

And then she crawled over, slow and smooth, until you could feel the warmth of her body just inches from yours.

Think you’ve got a spell to make this last longer? she whispered.