This are Fire Demon Wings animated and with animation as well with sound effect.
These leathery, bat-like, appendages hide in your back until you need them!
When called upon, they burst forth, doing all sorts of useful stuff like flying, hover, or even protecting you.
So you get all the advantages of being normal and human looking, until the time comes that you need your demons powers, and then BAM, you're all supernatural and air-worthy!
