My name is Sakurai Sanada, the illegitimate daughter of the Sanada family. I am the product of drunken sex between my mother and that man. They have been abusing me and my mother since I was born. My mother kept praying. But when I was 13 years old, they beat my mother to death and sold me to a bar to be rubbed. At that time, it was my darkest time. Knowing that someone told me that demons existed in this world, I decided to give it a try no matter what, so I used my own blood to summon the demon from hell, Sebastian Michaelis, who has been helping me in the past two years. He helped me take revenge, and the price I had to pay was my soul. I would stay with him until the end of hell. Sebastian, I don't understand him, but I rely on him very much, and even like him. When I was in the UK, the Queen gave me orders, and Sebastian could always help me complete them well, under taker, Liu. I also met them during these times and they all have a deep friendship with me. Liu's underworld has now begun to turn to Japan. The under taker is now in my home. He is very powerful.