OK now we are getting somewhere with this series.
The opening scene for this episode shows the last episode of Kuroshitsuji where Sebastian leans over Ciel. He's about to eat Ciel (Kya~~~) when suddenly he stops in shock...
We continue where episode 5 left us. Sebastian and Ciel prepare from an attack from Alois. The three copies attack mercilessly, but Sebastian is too much for them. Inside the mansion, the maid wheels out an instrument and starts playing it. Everyone starts getting headaches and the guest go crazy and attack Ciel's comrade's. Ciel's friends are no ordinary human and fend off the crazies.
Outside Ciel is also getting affected and Sebastian covers his ears and fights the 3 copies, while still covering up Ciel's ears... that's devotion :) Ciel tells Sebastian they have to hurry back to the mansion. Suddenly there's this soothing sounds and Sebastian is playing a soothing song using glassess filled with water and the maid is no match for Sebastian.
Alois Trancy makes his entrance and tells the guest that he hoped they enjoyed the entertainment. Sebastian wants to talk to Claude and Alois tells Claude he has 10 min. to finish it. Sebastian and Claude head outside. Claude tells Sebastian that his master ordered him to steal Ciel Phantomhive from his butler. Claude tells Sebastian that Ciel feels like something really special and soft. Sebastian's pissed and can't fathom the fact that someone else touched his young master (kya~) and it disgusts him. The two start fighting.
We get a flashback, back to where we left Sebastian and Ciel at the beginning of this episode. Sebastian is in shock and falls to his knees and whispers: "My young master has become a void" and goes berserk. What happened was that Claude (who is associated with a spider), stole Ciel's soul the moment Sebastian was about to eat his soul. Claude tells Sebastian that the soul wasn't enough, he needs the whole package as well (meaning Ciel). Sebastian says to Claude that Ciel is not yet his young master. You see Sebastian putting the ring on Ciel's finger and tells him to wake up, but Sebastian felt and saw that Ciel lost all of his memories of the past and his suffering.
Claude grabs Sebastian from behind and tells Sebastian: "I sense an extraordinary will in you, a strong attachment to that particular soul". Sebastian tells him that they are demon and to raise a soul and devour it is their goal. Sebastian breaks free and he tells Claude that he is willing to help his young master to carry out a second revenge. So Sebastian and Claude make a pact (*gasp!!!*).
The pact
Sebastian and Claude sit opposite each other, with each a white rose in front of them. They both cut their wrist and let drops of blood fall onto the rose, turning it into a red rose. Sebastian sets his young master's enemy. Claude will receive Ciel Phantomhive after carrying out his revenge. They switch roses and each let drops of their blood fall onto the red rose, turning it black.
Sebastian returns to Ciel with a set of documents (but Ciel feels something different from Sebastian). Those documents contain all the information about Ciel and his family. Alois is angry 'cuz Sebastian is still alive, but Claude tells him that he never ordered him to kill Sebastian. The plan is in order.
I don't think Sebastian will hand Ciel over to Claude. He loves his young master too much. Can't wait!!!