February 14

I can't remember what happened in September. When everything is gone, when it's dark and I'm alone.

Brisk winter air blew against my grey muzzle as I trotted carefully through the ruins of my beloved Ponyville. It looked the the parasprite attack from so long ago. Twilight Sparkle had saved us then, but she failed this time. Unless the ponies simply left, I was the only one alive. My time as a scientist was a struggle, stressful, but had merits, too. If only I had a confident, but alas, I haven't for months. Not since September.

February 15

Its been forever since I could have remembered. Where the hell is everypony? I just wanna know the story of what happened right before I became so alone.

My memory felt as though it was erased from my brilliant mind when everything happened. I don't know, truly, what happened to our strong civilization, our alicorn princesses simply gone, dissipated from our society when the first word of any problem hit. They were meant to protect us, but I can't remember where they went, let alone where anypony is.

February 16

Still can't remember what happened in September. When everypony died, trails of blood during my stride. I just discovered the ponies were defeated by something very strong, it seemed very weird and wrong, it just doesn't belong, like it came out of this world.

Memories still aren't back, I fell as through I'm going mad in this wasteland of Equestria. Blood trails are more frequent in my explorations of Canterlot. It seemed so wrong, like they brought everyone to our capital, where any disease would've spread like wildfire and an attack would take moments to employ. I don't understand where any of this could have come from, it seems almost… Like it's not from Equestria at all.

February 17

I've regained a small memory. Came to my head, just like that, suddenly. I think I've gotten a clue. Something tells me this is worse than what I already knew.

I've remembered only one thing so far, and it has horrified me deeply. I must research further, but I believe that a disease was released into our atmosphere, killing all… Except for me. I don't understand why but it may be much worse than what I previously assumed.

? ? ?

I just remembered what happened in September. I'm the one who killed them all, I survived after the fall!