This poem is about Xellos' human side. I know he's a Mazoku priest but he was human once and I think a small part of him remains human. Occasionally, his "conscience" as I like to think of it, rears its ugly head. That's probably part of the reason why he helps the Slayers gang.
As I lie on this bed of mist,
Where all dreams are made,
To nightmares, I shake my fist,
And demand them to fade.
But the chain of dreams,
Hold me fast.
While my screams
Echo into the vast.
Suddenly, the dark clouds part,
And I open my eyes.
I feel the beating of my heart,
And the burden of my lies.
My relief is great,
They were just my dreams.
Yet I feel the hate.
Nothing is as it seems.
I rise and stand,
To see the dark red,
That stains my hand.
With guilt, I bow my head.
I close my eyes,
And admit what I've done.
My weary soul cries.
The nightmare has just begun.