A Girl Called Fire

Akakasiako, a young girl often called 'Fire' because of an unnatural ability she has....
Kasia could be enveloped in multicolored flames, envelope others in her flames, create weapons and wings with her flames, and can point at any given object and shoot flames at it.
Kasia lived in Gehenna, a realm for demons. When Aka finds out she is a demon who could over throw Satan, she has to flee her home.
And where else could she go other than Assiah, the land for humans?
And what better way to hide from the monsters that are coming after her, than chopping her red hair off and dressing like a boy?
Will she fit in at her new school, Blue Cross Academy, with her tail, pointed ears, small red horns, her pale skin, her bright orange-yellow hair, and her red eyes?