Princess Knight of Lost Nation

She who was hailed as a formidable knight, a graceful princess, and a steadfast guardian to her nation. Then, an calamity come and claimed everything she hold dear, her nation, her royalty lineage, and most importantly, her family, Since the fall of her nation, she became the sole survivor of that ill-fated tragedy. Carrying the last royal bloodline, this vengeful princess knight now is on a quest to find out the truth behind the tragedy that befall on everything she beloved.