Disclaimer: If I own Kuroshitsuji, there would be no introduction of a sadistic blond who turns hysteric at the sight of his own blood and a copycat butler who's emotional impaired and needs improvement in the hair and eyesight department.
AZA'ZEL
-Hebrew word, meaning "entire removal" and "scapegoat."
Prologue - Consumption
There are two stages in the art of humane consuming for a demon.
First, you kill the body.
Killing is easy,
A knife, a gun, forks and knifes
a slice through throat, a flick of the finger at the skull, pull out the lungs, crush the heart,
a whisper in the ear, a caress on the cheek, a kiss on the lips
Killing is the enjoyment, and never painful
"Will it hurt?"
Then, you extract the soul
Technically, you only need a contact, anywhere, however small
Demons tend to use the description 'suck' or 'eat' in match with their need to consume-"the hunger" while in truth no specific action is needed
See, it's easy as well.
A brutal rip, a slash of claws, a sweet coax of the tongue
Extraction is the procedure
For those demons of the highest ranks, this procedure is but naught, for after endless millenniums of existence, they always slip out the soul beautifully clean from its container, leaving the tasteless flesh whole and well.
"A little."
A well done extraction is almost unfelt.
Then, you proceed to the feast
Some swallows it whole, bloody and messy along with the container. Some drinks it fast, and the battered flesh bursts to pieces. Some, however, takes it slow, stores it in fine crystallized glass, and savors its taste from time to time in his timeless lifespan.
When the last speck of soul is drained from the body, the body will dissipate into dust, shadow and wisps of smoke.
And Ciel Phantomhive's last thought before completely submerging in the darkness was
"Damn that lying demon, it hadn't hurt at all."
To be continued…
