There is such an animation, that is, in the first episode, the heroine escaped with her six-year-old daughter, and was later taken to a detention center, where she was attacked by a monster.

"The Blade of the Witch" This is the most powerful weapon handed down from generation to generation-the blade of the Witch. This weapon has its own will, and it will change its shape every time according to different battles. This weapon can satisfy the desire to fight. And "Witch Blade" will choose a woman who suits her master-fate. Come to Tokyo now, it has been six years since the earthquake disaster. Tianyu Yayin and another girl, Li Zi, slipped out of the Children's Welfare Institute. Waiting for them are the evil forces and cruel fate surrounded by the "witch blade". Thus, a new era of awakening began. ...