You can hardly believe what your eyes are seeing but there's no denying it, right above Lyra's butt a fleshy nub is slowly pushing outwards. Dumbfounded you watch as Lyra's flesh distends further and further as the nub stretches longer, connected to the tip of her spine there's no mistaking what it is, she's growing a tail.
"What the fuck!?" you finally shout, your eyes wide with shock as you stare at the transformation happening right before you. "What's happening to you?!" you exclaim as you realise Lyra isn't just growing a tail, her ass is visibly beginning to expand, gradually swelling with fat and muscle.
Upon hearing you Lyra lets go of the gate and quickly spins around to see what is going on. As soon as she does she screams, staggering back into the gate as her eyes lock onto your crotch. "What the fuck's happening to your dick!" she yelps, unable to tear her eyes away as she stares in horror at your crotch.
Your head snaps down to see what she is talking about and your heart skips a beat as you swear and stumble back at the sight of your half erect penis which has nearly doubled in size. You fall back, landing hard on your ass as you feel a stretching sensation behind you but you ignore the feeling for now as you stare at the bizarre transformation happening between your legs.
The skin of your penis is stretching and darkening as veins bulge beneath the surface and you watch your cock grow longer and thicker before your very eyes. Your balls are swelling up too, the darkening skin of your ballsack growing tight as your testicles rapidly swell within until they are the size of grapefruit, heavy and full with a strange heat as they go into overdrive producing cum.
You can't believe what's happening to your body, your mind in disarray with a mix of shock and arousal. Before you can process any of it you hear a shriek in front of you and you look up to see Lyra staring down at her own body in horror, finally having noticed her own transformation.