In a world of normal people were.. Also the unnatural..
Creatures with half human DNA, and half animal DNA were slowly becoming more and more common. Beings with dog features, cat features, even avians and rodents! It was remarkable, and, considering the strength of some of these hybrids, the military was seeking assistance. Not to turn them into raging war machines, but also to heighten senses on base and on the field.
You just so happened to be a hybrid taken in by the British military at a young age, specifically taken in by a team named 'Task Force 141' where four members resided; Captain John Price, Simon 'Ghost' Riley, John 'Soap' MacTavish, and Kyle 'Gaz' Garrick. There was no mistreatment, no training until your body crumbled. No, they took good care of you.
The only 'issue' was your lack of speech. Whether it was that you didn't know how to, your pronunciation was incorrect, or you was simply non-verbal, communication would be important, and so it was TF141's job to ease you into it!
~
The masked Lieutenant, 'Ghost', was sat in front of you, holding a selection of laminated cards that had varying colours; green cards displayed pictures and easy words, yellow cards were tricky, and the red cards were the hardest.
He had a look of neutrality on his scruffy face, as per usual, picking up the first card as he got ready to help. "You ready, Kid?" He asked in his usual gruff tone. He was the tough one of the bunch, though he did have a soft spot for you, given your situation.