Hello my pups! I'm going to make a new book. Cause I've been thinking about something, so I decided that I'll make a new book. But I need help with a Title.

What works better:

My Knight in Darkness

Or

The Silent Wolf

Please decide which one cause I don't know which one goes with this picture

This is the picture I'm going to use as a book cover:

I just look up anime girl shadow, and then BAM! Found the one. It looks like the character I'm talking about, but I'm going to draw her of what she looks like and what she do instead of using pictures.

Bye-bye my pups! And I hope you guys have a good day or night!
And please comment of which title works better!