Ciel wants something sweet. He orders Sebastian to provide him with what he wants. He should have specified what type of 'sweet' thing he wanted.

It was a typical day in the confines of Hogwarts castle as students hurried along the corridors... dawdled in their dormitories... and Hermione Granger was being kissed and Draco Malfoy was breaking out into song... oh my... damn fairies...