It's not exactly bloody, per se. There's a trail of dark blue swirl off to one side that could be blood.

But yeah. What. When the book is called Flirt, my mind does not automatically think of razorblades unless this is a quirky story about cutters, or Valentine's revenge.

Oh man, I have to find it, but there was a blog not too long ago when LKH finally realised that Swallowing Darkness is a double entendre.