>>287580605
Original model on 3D.nicovideo was taken down. There is a black one as a public avatar in some avatar world.
Other then that, you are out of luck.
Your best bet is someone here who has it and shares it. I would also like the have a Puck model btw.
You should also try asking in the mmd thread. Some autist must have archived everything on 3D.nicovideo.