In places unknown to most, groups of people dressed in black and white often appear.
In a magnificent library, a lowly librarian named Lan Qianyuan spends his days slacking off, until he discovers a book containing a magic circle.
In an instant, light envelops him.
Thus, the ethereal witch is born.
That day, a crowd of people dressed in white arrives at the library. A girl wearing a silver lock pendant is jostled by the crowd as she walks past every member of the library staff.
She glances at Lan Qianyuan among the staff. Her gaze is like the depths of hell, but she keeps her head down as she passes by him.
Perhaps the little librarian's life is about to change.