Ju Jue is a "child" of the Special Bureau, referred to as the system, but unlike her colleagues, she has no parents and has been helping in the Bureau as long as she can remember.
She traveled through various hours to guide the "undead" - commonly known as time travellers. However, her job has always been unsatisfactory. After all, it was Xianyu who took over...
This time, she met not a girl, but a boy...
Purpose: If you love the world, you are always the first angel to protect