Balros & Echoen
Balros goes on a date with you. Well, not /you/ - just the Applebloom head that's grown on your crotch. That sweet yellowpone face's throat becoming your pussy, heavy crotchboobs under her chin. Your legs are hers to control, your body increasingly hers - but you still have some control, some ability to twitch, move, and cum. Both squirrel and pony seem to enjoy your cuter, cartoony changes, few people recognizing the innocent foxgirl who's been physically bimbofied. 

LlunaBlue
Her crotchboobs had been a priority for the change; they'd needed to grow big and plump enough to hold up the poor foxgirl host's skirt so her Applebloom cunny can see where to direct her. Casual, flirty conversation with you while walking along the harbor contrasts with the trail of moaning people left in our wake, as a mere bump against her transfers an Applebloom parasite to them which manifest chaotically. Breasts become 'Bloomtits, testicles become twin 'Bloomheads which rise on up out of dicks like hydras, and one poor pregnant otter is left catatonically orgasming as her baby multiplies and endlessly mutates into mergeblooms that push out of her body at all angles.

Balros & Echoen
The taller squirrelboy holding handpaws with a sweet foxgirl was one thing - but the sheer show you put on with your huge crotchboobs and exagerratingly whorish frame inevitably draws eyes. Epidemics of Applebloom hypercorruption spawn in your wake. 
A wharf rat that brushes across your thigh finds itself hermed in seconds with a huge filly horsecock, cumming across the street. 
The seed lands in the tea drink of a mousegirl who was distracted watching you walk by; she sips, and her throat and neck bulges with a fat yellow ring, her head pushing upwards like a giraffe as an entire Applebloom grows between her skull and shoulders, her mousebody below becoming the ponygirl's new mousecock while her head is merged with Applebloom's, brains snuggled together.
Balros takes you to your preschool, walking up with his huge pillar of squirrelcock sunk deep into your Applebloom crotchthroat. The receptionist locks eyes with you, and you see your vision... expanding... as your skull and eyes increase in size. The receptionists' eyes widen in shock as her body and mind lock onto you, addicted and drunk on just the sight of you, before sight of her is torn away as Balros walks you into your home room. His cum floods your obscenely potent foxwomb filled with pony eggs.
The corruption explodes at that moment, your mind blooming open between every crotch in school, smothered in crotchboobs, pussymuzzles stretching open as you all forcibly throatbirth Bloom-infected clones. Clones with bigger tits and cocks than the ones outside. You feel every single sensation simultaneously, hear every moan and cry and squeal, and see the FoxBloom corruption rapidly mutate everyone around you.

LlunaBlue
Time slows as she feels it all... they all feel it all but they're also now all her! Each moment a new creature is touched, she can feel the connection being established and a powerful wave of orgasmic pride and satisfaction at having shared this with something new. Within the blinding pleasure, she can feel the initial confusion of the school's pet bunny evolve enough intelligence to understand just how fucking AMAZING it feels to Bloomify and birth, using her new young to smash out of their cage and join the chaotic collective of cum-bathing and copulation. Some pony muzzles throatbirth a new cock that drives their hosts to plunge into and plug any hole they can, to FEEL themselves spur the corruption even further.
The sweet scent in the air manages to seem beautifully subtle despite how utterly thick the atmosphere is with it. Passersby catching a whiff feel it travel straight to their brains, which throb and expand as they're taken over by the growing Bloomhive. An otter father rushing to school late with his son in tow doubles over, and his son trips headfirst into the fat puss that wasn't there a moment ago. The "father" raises her head high as her eyes expand and she feels the nerves of a new whole lower half of herself connecting, and her second head buried deep within, muffleswearing more and more 'Blooms into existence within her.