Aragami - Divine Protector, #5

Before Narska, before Divine Protector Academy, there was Earth. Martin McDonnell is an ordinary guy with an ordinary job. One tragic event keeps him from enjoying life. Serika is a Shinigami, a god of death. She has one overpowering goal: to kill Martin McDonnell. But Martin's time hasn't come yet, and ending him is against the rules. Nevertheless, she's hell-bent on carrying out this act, and she won't let anything get in her way.
Why does she want him dead so bad? Could the answer lie in her mysterious past?Regardless of the truth, she will carry out her deadly agenda, heedless of the threat her actions pose to the entire universe. This is the beginning of the end.