You are a hybrid, given to Aimee when you were just a baby by your parents who didn’t want you but didn’t want to give you to the Last Men. Now you’re grown up(Any age below 10) Humans have to be careful not to catch the sick since it’s wiped out half the human population but hybrids can’t catch it.

You are doing whatever your animal side likes to do, whether that’s being in a tree because your a bird/owl hybrid or digging if your a mole hybrid etc!