I am asleep. I'm wandering in a forest, then I notice the bracelet on my wrist. Rather than being my Jewelry Star Bracelet, a silver bracelet with star and pearl charms, it is the Dark Jewelry Star Bracelet, a solid black bracelet having a dark blue gem. I let out a scream of terror and tried to remove it.
"Do you really think you can get rid of me that easily?" Suddenly says a voice behind me.
I turn around sharply and see myself transformed into Sailor Mercury, but her uniform is different. It's a different shade of blue and it's downright evil.
"Who... Who are you?" I asked, though I suspected the answer.
"You already know that. You may have forgotten everything, but I'm still here. Everyone has a shadow in them. I'm your shadow and I'll be back!"
Dark Sailor Mercury laughs and I wake up. It's just a nightmare, I tell myself. To make me feel better, I look at the bracelet on my wrist. My Jewelry Star Bracelet. See? Your bracelet is fine. It's okay, you can go back to sleep. I start to fall back asleep when I feel something cold at my feet. I get up to see what it is and scream when I see the Dark Sword, an ice sword used by Dark Sailor Mercury. I don't remember when I was Dark Sailor Mercury, that's true, but Usagi told me about the Dark Sword. H...How did it get here? A weapon can't be materialized unless you are transformed into a Sailor Guardian. Suddenly, Dark Sailor Mercury's evil laughter is heard and, terrified, I close my eyes and cover my ears. It can't be! She and I... we can't... be one!
Author's comment: The idea for this fanfic came to me because my Head-Canon is that Dark Sailor Mercury is still in Ami, even after Ami was able to free herself from the darkness. Thus Dark Sailor Mercury would try to "come back."