Flaming buttefly dance (kny story)

Wondering in big mountain teenage girl is stuck whit three demons. She was part of demon slayer coprs , but she wasn't good at useing her breathing style yet , because she never had one. In middle of three demons trying kill her she was hopeless she didn't know how could she fight of the demons she was out of options. She lived in world that was full of demons also there was really powerful demons such as upper moons. She Didn't have parents she lived in orphanage near this same mountain. She never knew her real parents. She was good whit out breathing style too , but now she was tired.
Few hours later She came across her orphanage and that's were everything begins.