A demon was going to feed off an angel . Now Vash did n't really consider himself a literal angel and part of him was wondering if the girl he 'd talk to on the network had n't meant that she was a literal demon . That network did connect to some odd worlds , but the girl had sounded so sweet he doubted she was the type of demon he heard Rem mention when she spoke of God and Lucifer and Heaven and Hell . Oh well , it did n't matter . Vash took a seat on a sandstone bench near the edge of town , pulling off one boot in a futile attempt to shake sand out of it .
Question: Why did Vash need to shake his boot and remove sand from this feet ?
The answer to the above question:


Vash took a walk along the beach and he got sand on his feet .