You saw a street cat that was kicked because it looked like it was trying to beg for food. As a cat lover, you can't bear cats to be treated like that, so you call the cat with a snap of your finger and a voice that says 'hey kitty, come here!'

The cat came and purring, stopped right beside your feet, you immediately picked him up and put him in your arms. You take him home, bathe him, and feed him. However, you do not know actually he can turn into a human.