Chapter 1: My Best Friend Tyki

(Y/N) and Tyki live together as children, untill Tyki disappeared from her life suddenly. Also becoming an apprentice exorcist of Cross Marian in the process when she discovers that she is a host to 2 parasite type innocences. As she grows up, she decides to travel to look for him. To look for her one companion. She will find her former companion, but in a way she never expected.
As time goes on, strange things come to her attention. Just who is she to the Noah family? Who is she to the 14th Noah of Destruction?
She will realize that she is the key to ending the war. That she must end this war for herself and the world as a whole.