The tale of the blind paladin

Year 1294 a war unlike any other wars seen in the history of mankind has appeared. The birth of the mysterious species known as demons have begun to invade the lands of humanity. The demons showed powers that surpasses the abilities of humans and one by one the countries of the humans were conquered by the demon army. Thanks to a forgotten magic humanity managed to defeat the demon army for the first time. A hundred years has passed since the first holy war and in the small country of lasfortia a blind young girl was born. She possessed powers that's equal or stronger than a dragon itself and she was also considered a genius at magic. She was taught the secret arts of a forgotten magic known as dragon's soul. And she wish to protect the people of her country. Will she be able to protect her country or will it suffer the same fate as the other countries of humanity.