Tokyo Slave Show...I expected it to be some kind of auction style thing, but I guess it really does seem to be a reference to the TGS in terms of playing 'games'.
Great ending though. A round-the-world trip, but what about the cake?
I think this is the second part of the pet or slave series. In the first part *spoiler* a slave gets his balls crushed with a hammer by the girl who bought him...