This demon

This demon of mine
is ripping through my skin.
It's coming out
and I cant keep it in.

You can start running
but you cant hide.
I've become evil
the good in me's died.

Its to late for you
because you've fucked with me.
Now my demons unleashing,
and you've set it free.

It's coming for you
your all mine now.
I cant stop this demon,
I just dont know how.

There's nothing you can say.
It's alreadys been done.
So just sit still
so I can have my fun.