Wonderful bite-sized treat!
The use of icons instead of text really heightens the emotional impact. Never before had I been so touched by a work of such a short form. Still, some of the lines are tricky to decipher during the first playthrough. This is fine, as the short length encourages rereading, but it would probably be frustrating otherwise.
Art is really pleasant to look at; facial expressions are adorable; and there is even some advanced camera work in one of the scenes.
I have found Shade and Maddie to be charming characters — individually, but especially as a team. In the end, I was sad to have to leave after meeting them just a while before. But I guess you just can't keep chasing ghosts forever, eh?