Abandoned by her parents and struggling to survive, Yu fell into a vampire mother one night and fell into medieval Europe. Yu fell into a more difficult life in the Middle Ages and became a child in her belly due to an unexpected death and was hunted down by a bunch of people.
I don't know whether they are friends or foes, Lucifer, Agvard, and Kaiser.
Yu Luo continued to wander around the Middle Ages helplessly and awkwardly.