Sam pulled Mia to her feet.
'We're not done, but we really need to finish the case against Martin so we can get the police on him.'
They exited the building and went over to the mobile lab which the cleanup crew had brought. Bringing the lab tech up to speed, they quickly formally verified their obvious infections, and also confirmed the vials as well. A few updates to the case Sam had logged the night before and it was off to law enforcement.
Mia was shifting in her seat, visibly uncomfortable.
'You should probably take care of that now. At least here in the lab we can collect it and give Research another high quality sample for their use.'
Mia nodded but had a pained expression. 'I know, but if I cum, I'll change more.'
Sam shook her head, Mia still seemed to be somewhat in denial. 'You are going to change. There is no stopping it. Even with iron willpower, you are only buying yourself a few days.'
Mia nodded, grabbed a specimen collection jar, and went in the other section of the lab.
Sam texted Lars, asking him to meet them in the school lounge. About two minutes later, Mia walked back out. One hand held the full jar of cum, the other dangled her bra.
Mia had always wore a size too small with her CDC issue jumpsuit, so that it would cling tightly to her curves - especially her ample chest. That boobswell was gone, with her suit now stretched tight across her shoulders and through her arms. Bulging biceps threatened to burst the seams. The hair growth was now clearly a mane, thickly enveloping her neck and disappearing into the opening of her uniform.
Sam lead Mia back to the lounge. They sat down in awkward silence.
There was a knock at the door, and Lars entered. His massive frame forced him to duck and even turn a little sideways to enter the room. Mia's eyes went to the foot and a half of hard cock standing proudly.
'Mia, meet Lars. Yesterday he was a young woman named Lauren, with lionine legs and a mind ready to shatter from sexual tension after resisting for a week.'
Lars sat down crossed legged on the floor, completely relaxed amid the tension in the room.
'Lauren couldn't beat it, and put herself through a week of hell.'
'And I'm much more at peace now as Lars.' He added in his silky rumble.
Sam stood and unzipped her jumpsuit. 'Giving in is the only rational choice. That jumpsuit was the last piece of clothing I'll ever wear. When I walk out if this room, it's going to be on paws, and I'll probably need to duck to get through the doorway.'
She starting stroking her cock. Mia stood up and started going towards the door. 'Nope princess, this is part of our deal from earlier. I won't force you to give in, but I'm going to give you a lot to think about. Sit back down.'
Sam masturbated shamelessly, some strange parting her seemed to enjoy the audience. She knew that Mia would break fairly quickly; Lars' potent musk was filling the air, and the double eye candy of Sam's transformation and Lars' massive idealized form should drive Mia to her breaking point.
Sam came hard, intentionally arcing the jet of cum to splatter onto Lars' cream colored chest fur.
Sam didn't pause after blowing her load. 'No more refractory period, we can just keep fucking and fucking.' Sam said, her pleasure audible in her voice.
Inky black fur was sprouting around her groin, spreading down her inner thighs and up to her belly button. Her soft stomach tightened, definition showing as fat melted away and muscles swelled. A black cord snapped out behind her, as her tail sprang into being. A crimson red tuft adorned it's tip. Her cock turned black, as did her nipples and lips.
As Sam worked her way to a second climax, Lars was licking himself clean. The contortions and flexing needed to reach every spot put his feline flexibility and powerful physique on display.
Mia was losing her battle. The room was now filled with the potent scents of male lion and cum. The sights in front of Mia were stimulating her in ways that wouldn't have been possible the day before. Her hand was glued to the bulge in the front of her jumpsuit.
Sam came again, ropes of jizz falling to the carpet. She moaned as her body ballooned with a hundred pounds of bone and muscle. Her shoulders popped audibly as her frame widened, skin tightening as she bulked.
Her hair turned crimson as it surged. Unexpectedly it did not form a mane around her neck and shoulders, but simply gained volume and cascaded down her back. Femboy was the likely culprit as it fought to keep some girly attributes.
Black fur spread down her legs, which lengthened and thickened. Her fur covered hips and ass swelled, keeping their ample proportions relative the the rest of her enlarging frame.
Mia's fashionable boots exploded, forced apart by rapidly growing paws. Her hands changed as well, giving her thick heavy hand-paws. A claw slid out and cut through her jumpsuit, giving her direct access to her cock. She had cum inside her outfit, and began furiously pumping her lubricated shaft.
She fell off her chair and rolled into her knees, bent forward with her ass thrust in the air. One arm braced her body, the other was glued to her growing dick. 'Just fuck me!' she screamed, new desires making her desperate to be filled. Sam surged from her chair, unsteady as hands and feet shifted to paws of her own. A flick of a claw opened Mia's jumpsuit from behind, and Sam rammed herself home in the back door of her former nemesis. She leaned forward over Mia, and raised her tail high.
Lars needed no further invitation and pounced, eager to enjoy the pleasures of Sam's still well cushioned ass.