Thirdworld

So I'm looking for something I remembered. I'm not sure if it's an anime or a manga but it has to do with a girl who for some reason surrounding her grandma casts a spell to summon a demon. Instead of summoning a demon she is transported or something to another world, the demon world. There she meet a guy who gives her demon wings and a tail (maybe some horns too but not positive). She then goes to something like a school or what not and has two best friends. One is an elemental (or whatever they are called) who chose to be a demon. The other was born a demon but is really nice. Sorry for this being too long and I hope someone can tell me the name of it. Thanks. ╥﹏╥

So I'm looking for something I remembered. I'm not sure if it's an anime or a manga but it has to do with a girl who for some reason surrounding her grandma casts a spell to summon a demon. Instead of summoning a demon she is transported or something to another world, the demon world. There she meet a guy who gives her demon wings and a tail (maybe some horns too but not positive). She then goes to something like a school or what not and has two best friends. One is an elemental (or whatever they are called) who chose to be a demon. The other was born a demon but is really nice. Sorry for this being too long and I hope someone can tell me the name of it. Thanks. ╥﹏╥