Juno, with a shout, plopped down into the hot, fleshy prison that was Jyn’s stomach. He splashed down into the warm stomach juices and was immediately encased by the groaning, churning stomach walls, which worked to ease and massage him into a wet, sloshy submission.
The dragon kicked and punched on the stomach walls in pure panic and terror, trying to irritate Jyn enough. But all he did was please his predator even more.
"Now, then," Jyn said, rubbing his fat, full belly with one paw and licking his lips in satisfaction. "My body is eager to make your abilities its own."
Juno continued his futile, fruitless struggles in Jyn's belly. But over the next several minutes, the lumps and bulges that he made on the werewolf's stomach grew smaller and smaller and less and less frequent as the evil werewolf's strong, powerful stomach acids went right to work on him. Finally, they stopped altogether as Jyn broke down the dragon into nutrients, sending him to a different part of his body for re-formation. And permanent imprisonment.
Once his digestion was complete, Jyn felt very pleased with his meal as he rubbed his now-flat belly, which was really just abs once more.
But then, he felt something in his stomach that quickly shot back up his throat.
"Urgh." He grabbed his maw as his throat bulged out.
Something hadn't been digested and was about to be expelled from his body.
"BLERG!" the werewolf gagged, coughing up a dark-gray tail ring. One that Juno had been wearing. It was shiny and covered with drool as it hit the grassy ground and rolled a few feet across it before finally coming to a stop.
SMASH!
One stomp from Jyn's mighty hindpaw crushed and smashed the tail ring into pieces.
"He will not be requiring this anymore," he chuckled sinisterly.
Then, he felt a surge of power running through his body. He pumped both fists on either side of his head as he looked over himself, smiling with evil glee as he began to glow with a bright, purple aura.
"Ah, yes," he said. "I can feel it now. I can feel his power coursing through me!"
And seconds later, he began to change. . . .

Part four of a five-part commission by  ViceX, featuring his original character, Juno, and my main Keepers antagonist, Jyn.