Godeath - Megami no Ketsumyaku

God Death - Megami no Kechimyaku

Plot
It's the 18th century in Naples, Italy. There is a girl named Maria living peacefully in the city, but she is more than she appears. She is like a goddess of death, with a sword that cuts through everything. But what exactly is she? Where has she come from and what cruel destiny awaits her?