Why are there four graves when Ciel first comes home? Spoilers below for those who haven't read Chapter 129. 

When Ciel first comes home with Sebastian, 


  why are there 4 graves when only 3 people died (Vincent, Rachel, and Real!Ciel)?


So why would there be four? Could it be that they're pre-made? Or maybe they assumed that 


  Our!Ciel is already dead?
The fourth grave is Our!Ciel’s grave. They made graves for the four of them since they assumed they all died in the fire.