Creaturesofmagic Stories

It all started normally. A train ride with the dark shapes shifting in the windows. Sitting in class as dark shadows moved along the luminescent floor. And the nearly transparent creatures crawling across the windows in the shopping mall. Rexon had always been able to see the moving bodies, and was familiar with their noiseless adventure on the other side. Then they began acting strange, possessing others, speaking with him in a language other than their own, and giving him strange things.Then he saw the cloaked figure step out of the changing room window with a long sheath at it's side. Who is this figure, being the first he had seen to escape the glassed barriers, that is free upon a world where only he can see it?