D.Gray-man Episode 47: The Crystal Girl
Episode 47 of 103 of D.Gray-man, aired August 28, 2007, 25 minutes. Available with English subtitles and dub where released.
Episode summary
After Allen, Krory, Lenalee, Lavi, and Bookman are reunited with each other, they arrive in a town where a strange phenomenon is causing a water shortage. They soon discover a girl named Mei Ling and a history with a crystal ball that might be the cause of the water shortage and a possible Innocence. Also searching for the possible Innocence is two Level 2 Akuma.