Only darkness knows the tale

Some say,
I was given birth by

G guardian
O of
D doom

to parallel the structure of this universe,
or
I stole something very precious from him
and locked it in my heart forever.

Well, I haven't seen his presence since I came into existence.

Some whisper,
I force them to

R roam
I into
N nostalgic
G garden

of an endless loop
where they have to live, die and reborn everyday
to repeat the same thing time and time again
until I eat their soul.

Some adore me as their

G gift
O of
D dreams

for making them immortal;
once I fill their hearts with my

L lots
O of
V vulnerable
E energy

they happily suffer everything -
from cuts to bruises to abuses and fear no pain.

Tell me, has anyone of you ever seen me?
Only I know the tale
which is I am nothing, but just an experience.

And I won't come out easily unless someone triggers me.
Thank you,
Ben!

Note: wrote this one for Ben's darkness contest.