
We don’t know but hopefully the next chapter will clear up some details. Yes, we have nicknames for the twins, OC for our ciel and RC for real ciel, real ciel being the older twin. In the manga, Sebastian said something along the lines of paying a fee to cross the bridge probably meaning that a sacrifice was needed to Summon a demon(that is how Sebastian was summoned and explains why RC asked Sebastian How dare he do ‘that’ to him that day), so RC should be dead, since he has no soul. But idk, it might be undertaker since in one chapter he fed something to ciel(idk which one) and said that it wasn’t time for him to wake up yet.
Did anybody know what is 'Ciel' real name. 'Ciel' is actually the elder twin brother name right? Is 'Ciel'(the elder one) alive or it is just a possesed corpse made by undertaker?(i read some comment saying so).