Return from the bloody midnight

Midnight, world's 3rd best assassin, as the legend said, only 2 living person had ever seen her face. 。。。 Had died after her 16th S- class mission. 。。。。。。。。。。。。。。 As she reopened her eyes, fate had brought her back to to her childhood with her 17 years old memories. Can midnight grab this chance and start a new life...