Urban Fantasy, High Fantasy, Epic Quest, Sci-Fi, Time Travel and World Hopping, Steampunk, Action/Adventure, Modern Drama, Mystery, Slice of Life, Romance, and many more.
The question is not "why is this person's bat-bed-thing seemingly floating in the sky?", It's "Why was this girl's bat-bed-thing apparently set upon a piece of pavement before having been carried into the sky?"
I clearly don't know how to dress myself. Why else would I be wearing a jockstrap on my FACE? The upturned collar and poorly tied tie are besides the point!
Some people see the school as a place to learn, but for me, it is a battlefield. Heck, I've even lost an eye during the "Firebreathing Space Bronies Incident" in my college! (and now I look 100% more badass than ever before)
(Note: No "firebreathing space bronies" were hurt during the production of this post.)