[ He watches carefully for Sasuke's reactions. ... That's the kind of thinking he expected, yes. ]

At the end, the final Key will be given to the "winner". The person who has... solved the most. Done the most. But, there's nothing stopping it from being taken. There are no rules against that. The only rules in place are "someone must be a bridge" and "the rest must leave".

The one who is the most evil... do you think it's you? The others will attempt to argue that case. Whether you believe that or not... leaving this World is impossible without a bridge. That is why it is so very unfortunate you are all here.