So if you have not seen black butler would recommend not reading this.
As you all know Ciel's mansion burned down and his parents dies blah blah what ever. What I care about is that ciel is ok so yeah ciel was kidnaped by some colt and they branded him but oh yeah sebby (Sebastian) came to the rescue and they signed a contract

so mostly just Focus on the eye. That is what happened when he signed the contract with Sebastian. Now he is his loyal butler. Sorry to go off topic but does any one ship sebaciel I hope not because it will always be (y/n) plus ciel no matter what!!!!!