When she was in her senior year of high school, an accident took away her parents. She was the last person to know that her parents had left her. After graduating from the college entrance examination, she fled this city that was only filled with sadness. When she was applying for the voluntary examination, a thick application guide read two words "anaesthesia" in front of her eyes. She really wished that she could anesthetize herself for the rest of her life, so that she would not have to face the fact that both her parents were dead.
When she finished her studies she returned to the hospital where her parents were pronounced dead. Unexpectedly, the surgeon who performed her first surgery was actually her brother who lived next door. Step by step, she fell into the "trap" dug for her by her "brother" until she was eaten clean...