Once demons used to be angels

The relationship between Sebastian and Ciel has always been complicated, but when the contract is drawing to a close, the two find themselves dealing with the delicate feelings they hadn't expected to feel for each other. By now the killers of Ciel's parents are dead, and Ciel begins to seriously fear the death that looms over him, like a shadow he knows he is not ready to face. Unexpectedly, when it comes time to take his soul from him, Sebastian gives him one last week to live. Why did he do it? What will happen in Ciel's last days of life? Is death really his only destiny?

NOTICE: It is NOT a SEBACIEL. The relationship described between the protagonists is purely AFFECTIVE.