The Enemy Inside
Disclaimer: I don't own the Keys to the Kingdom. Why must I remind you?
The Piper
This is what hatred does to you. It turns you into something terrible, it is like a poison which must be ripped from the soul before it destroys you. The Piper, filled to the brim with hatred and anger at being thrown into Nothing. You let yourself become obsessed with revenge, and it has extinguished your every other thought.
What has become of you? You are merely a shell of your former self, both physically and mentally. There was a time that you truly did enjoy your creations. You treated them as your friends. What happened to those times? You used sorcery to force them to obey you, now you sacrifice your Newniths like there are merely pawns. This is not you Piper. Give up on revenge Piper, tear out the the anger from your heart.
Grim Tuesday
I can see it in your eyes Tuesday. Greed, endless, greed that will never end. Though you always had all that anyone could have wanted, the Keys, the entire Far Reaches, they were still not enough. No matter how much you get, you always wanted more.
What use is power that cannot grant you happiness? In your greed, you even harmed those who were closest to you, your Three Times. And yet, even then, you ran after the First Key, and lost all that you had. You ruined the lives of hundreds of Denizens for wealth that was barely of any more use to you. In the end, objects cannot give you anything. I hope you realized that in the end.
Lady Friday
The mirror, the mirror that is the Fifth Key, did you ever look at it closely? Did you hold it up to your face? What you must have seen, was you. Only you.
And that is the only thing that matters. You've tried using the Key to gain emotions from others, but in the end it is only you who matter. And that is the greatest thing that can ever exist, you. That is what the Key wants to tell you. It is only you who can make a difference. True emotions will come from inside you, all you must do is realize that you had them all along. Just try once, just try.
Superior Saturday
All the time, you cast your gaze upwards, all the time. All the time, envying what was not yours. What use was that? Rather than envying what someone else had, did you ever think what you could have done with your own power? You could have rebuilt the Upper House, instead of a huge tower you could have made the Upper House better than even the Incomparable Gardens. What is yours, is always a hundred times better than what someone else has. Though the grass may seem greener somewhere else (rather literally in your case) in the end, you were much better off where you were. Remember that.