Okay, I know I'm still trying to finish off the sub-arc story as well as the first story, but this just popped into my head a while back. This is just a maybe in case I can ever get the other stories finished.
Enjoy… and don't be scared… too much.
(Scene starts from a train heading down a sunset dusked landscape high in the mountainous region of Romania. Cutscene goes from that to a dark and twisted castle. And then a final cutscene to Whitmore Manor; Present Day)
(Cutscene to a golden glass cupboard with many vials in them. all contain dates and times on them. Mr. Whtimore shows them to the group of teens; Eric, Ariel, Frey, Kida, and Olette and Seifer.)
Mr. Whitmore: What you're all looking at are memories. In this case, they all are pertaining to one individual that me and Ol' Thaddeus watched out for… until she disappeared.
(Takes only one vial, and shows it to them all for them to see.)
Mr. Whitmore: This one just happens to be one of the most important memories that me and Ol' Thaddeus collected. (He then looks at them all deadly serious.) I'd like you all to see it.
Stone-Man85 Studios presents in Future development.
(Eerie music plays on from here on out)
(The Six teens stick their faces in a pool of water, allowing the memory to focus all in their minds.)
(It's raining, and two young teenaged men walk towards a gloomy-looking castle of sorts.)
To Know the Future
(The two boys walk up a twisting flight of stairs as an innkeeper leads them to their destination.)
Innkeeper: In all the years time, the master has not seen anyone since the accident with her parents or family.
(the two are led to a large bedroom with a balcony; the only source of light in the room. Sitting in a chair, waiting for them, with their back to the light and their face covered in shadows, is a small girl around the age of fourteen. She is a gloomy, yet scary individual, wearing a black long-sleeved dress with a turtleneck, thin, pale skin, and black hair messy and long down her back, bangs covering her pale face, but only showing a single green eye… that stared at the two boys like a demon hidden in the shadows.)
You Must Face the Past
(The girl remains in her seat as the two young boys, identified as the teenaged Thaddeus Thatch and Preston Whitmore, stand before her as she talks to them, still staring like a demon.)
Young Thaddeus: Why did you want to see us?
Girl: I needed to tell someone my darkest secrets. When I heard about your expertise in the paranormal, I knew you two were the ones to talk to. You see I'm not like anyone else… I'm not… normal.
Young Whitmore: Can you prove that?
(the girl looks to her left, straight at her bed… and then suddenly is aflame by green fire. Both boys look at this in both amazement… and terror. The girl looks calm, but still doesn't blink from her demonic gaze.)
And Face the Darkness within It
Girl: I can make things move with just a flick of my wrist and hand, or shoot bolts of lightning out from my fingertips.
(Frey, Eric, and Seifer stand-side-by-side as they face off against strange humanoid shadow creatures. They hiss and growl right at the trio as they slowly make their way to them.)
Girl: I can travel through darkness and shadows without even trying hard. As well as change my shape into any form I want.
(Ariel and Olette are running from strange creatures down a shadowed hallway.)
Girl: I can make bad things happen to those who abuse me or even mean to me.
(Green fire burns around the heroes as they prepare to fight for their lives against creatures of darkness. And then, above them, a giant black dragon glares down at them as it roared out above and in the air as it shot out green flames to the heavens, making the sky look like it was burning.)
(The girl then stands up as she tells the two before they leave) I can even hear and see the darkness in others' hearts… as well as speak to the creatures that are born from the darkness. (Young Thaddeus and Whitmore stop as they turn around, looking surprised and frightened as the young girl continues) They find me….
… they whisper things…
(And then suddenly, a bolt of lightning lights up the room, causing the girl's shadow to illuminate on the wall in a giant-like way, nearly covering it. But instead of the shadow of a little girl… it was the shadow of a tall woman. A woman with a massive black horn hat, a batwing-like edged robe, and held a staff of sorts.)
Coming sometime in the future…
Aquatic Kingdom Hearts: Blood and Darkness
(Present Day)
(Ariel looks to Mr. Whitmore, frightened, and asks him)
Ariel: Did you know? Back then?
(Mr. Whitmore looks to the teenagers as he struggled to find the answer)
Mr. Whitmore: Did I know if me and old Thaddeus met and befriended the world's most darkest and dangerous sorceress in the world?...
… No.