GOSICK: You Call That Deduction?

The fanfic least like a fanfic. The original is Gosick, but what does this story have to do with it?

My female lead will outshine the original even in the art of deduction!

The occult, divination, the marks of a bygone era, and the war machines of the Steam Age...

None of that matters!

A ghostly sleuth solves cases in the world of the living, while the living solve cases in the underworld.

Two souls in one body: you're the Queen of Deduction!