King Sombra's attempt at using his smoke form to smother Cadence fails when she inhales him completely. Inflation/kinda vore.

Cadance’s eyes widened as Sombra’s form wavered, flickered - and then vanished into a cloud of smoke.

No. Wait. Her eyes narrowed. She could still feel his magic coming from that cloud, could feel his gaze on her body. It made her skin crawl.

Your love may be strong, a voice within the smoke - his voice - hissed. But without air to keep you alive… A harsh laughter filled the room. Too late, Cadance realized what he was going to do. Too late, she realized that opening her mouth to retort had been the wrong thing to do -

With a cackle, the cloud that had once been Sombra flung itself toward her, crossing the distance so quickly that she didn’t have even an instant to react. And then her eyes were watering, her chest was heaving as she struggled to take in air. Each breath came shorter than the last. She gave one last, shuddering breath.

And this one went down a little easier than the last. Cadance’s red, watering eyes widened. It couldn’t be. But she inhaled again - deeply, not with the struggling gasps of moments past - and felt her breathing come a little bit easier. More of the smoke came in to replace what she’d inhaled in seconds, but that split second was enough.

Again and again she inhaled, and each time, she felt her next breath come a little bit easier. Her every breath grew stronger, and soon, she felt as though she were swallowing Sombra down, rather than he “suffocating” her. She grinned to herself as she took another breath, feeling another whiff of smoke filling her belly.

Already she felt rather stretched - each time she exhaled, she breathed out carbon dioxide, but Sombra’s smoke form stayed in her belly. She could feel it rounding out beneath her, could feel herself getting more “stuffed” with smoke each time she gulped it down.

Now she did grin. The cloud of smoke was noticeably smaller than before, and for whatever reason, Sombra hadn’t noticed that the tables had been turned. Cadance just kept swallowing his new form down. She actually found herself enjoying the way his gaseous form bumped up against and filled her belly. It was almost like being full of soda bubbles. She would’ve burped, but figured it’d be best to keep as much of him inside of her as possible.

Her belly was bumping against the insides of her back thighs now. She could feel that the skin on top of it was good and tight, just like a drum. There was so little of Sombra left now -

No! she heard him cry. Cease this! She could see some parts of the smoke starting to whisp away from her. Trying to escape? She’d put a stop to that. The grin broadening on her muzzle, she prepared herself - and inhaled deeper than she’d ever inhaled before.

There came a high-pitched wail as the rest of Sombra’s form went tumbling into her mouth and down into her belly, swept there by the sheer power of Cadance’s lungs. She shut her mouth victoriously and swallowed. She could almost hear that wail echoing in her ears as her stomach bloated out even further, pushing out until it almost reached her legs.

She plopped back onto her haunches and groaned. She’d never felt so full. One hoof came up to pat and rub her massive, gurgling stomach. That made it a little better.

Inside of her belly, she suddenly felt an absence of pressure - and then an overabundance of it as the gas inside of her resolved into a fully physical pony. Sombra’s physical form filled her belly now, pushing it out even further in front of her. He shouted and twisted and squirmed against her from the inside, but all it did was tickle her.

Cadance just chuckled, softly rubbing her giant gut with both hooves. “Looks like you lose,” she said, smirking.

Sombra just screamed in rage. Cadance just rolled her eyes - and started looking around for anything she could gulp down to accompany him. Funnily enough, she was actually still feeling pretty hungry…