This is a sad poem, with Yami cursing himself for a mistake he made.
What have I done?
What is this thing…
That I have become?
What kind of demon am I?
What is this rage that I have?
I was never like this
I used to know the difference
Between right and wrong
I always did what I could
To protect my friends
I didn't believe in harming others
Or putting my friends in danger
But because of what I did…
I've seemed to have lost myself
Where did my honor go?
Where is my kindness?
Have I lost my belief in the Heart of the Cards?
I used to have all those things
But now they are gone
Because of a foolish choice
I never should have made
Why didn't I listen to my aibou?
He warned me not to do what I did
But I refused to listen
Now thanks to my foolishness
My best friend is gone
Possibly for all time
It wasn't him that should have been taken
It was me
I committed a horrible sin
And there's no way to undo it
If only one can undo the past…
How did I become this way?
This side of me, my dark side
I would never admit it but…
I am frightened of it
Before, I had Yugi to help me
But now…
I am fighting it all alone
I never should have listened to Raphael
Thanks to him and my rage
I betrayed my best friend and another world
By playing the Seal of Orichalcos
Why did I do that?
Why didn't I listen to the one person…
Who always believed in me?
Why couldn't I control my rage?
But there is the one question
That always rings in my mind…
What have I done?