You go back to the secondhand store. He is now grinning again.

"Oh, Hello dear. Looking at old books again?"

He closes his eyes and a few seconds later you see his ears grow sharper, pointier and longer tiger-like while his hands became thicker and covered in orange fur. His tail became larger as well while his claws became sharper and longer as well.The rest of his body is now completely human except for the tail,hands and ears.He is waiting for your thoughts.