A great read.
The "Fantasy" drug reminds me a lot of the Devil Fruits from One Piece-- especially with the "Model: __"
I have a feeling the author put a difference between the two by having the Fantasy drug only giving the user the abilities of mythological creatures (i.e.: Werewolf, Sylph, Gnome, and etc.)
Hope this gets serialized and doesn't end up like Golem Hearts.