Well Aqua, if you would like to know how he got there, I will post a special chapter right here telling about Sephiroth's tale after his fight with Cloud on KH2. So if anybody is wondering, this chapter won't directly follow the story. Enjoy.
*Special Chapter*: Sephiroth's Tale
Sephiroth jumped in the air, somewhat surprised at Cloud's newfound light, and was readied to swing his sword as cloud swung his. As their swords clashed, everthing changed. Sephiroth looked around. Sora and everybody were gone, it was just Cloud and Sephiroth. They were in a different place too, no longer were they in Hollow Bastion, but just a big open area surrounded in darkness.
"Prepare yourself Sephiroth!" Cloud said, gripping his sword in both hands.
"You seem confident in your new light," Sephiroth said readying his sword as well.
They both dashed toward each other, not a look of worry in either of their faces. Their swords hit. They swung and swung at each other, almost to no end. Hours passed. Sephiroth was beggining to feel tired. Cloud's new light just might have been too much for him to handle. Then, all at once, Cloud just screamed"OMNISLASH!!!!!!!!!!!!!!!!!"
Sephiroth felt powerful blows coming in, and then passed out.
When he woke up, he looked around, and noticed he was in what he thought to be the infinate abyss, until the room began to change, and looked like a dungeon. It seemed to be a work of magic by a witch or something.
"Finally awake I see," a woman's voice said.
Sephiroth turned, to see Maleficent across the room, a fat doggish-cat like person standing next to her.
"Don't be alarmed Sephiroth," Maleficent said as she used her magic to make a mirror appear before him.
"WWWWAAAAAAAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH!!!!!!!!!!!!!!!," Sephiroth screamed as he looked at himself," What did you do to me, I look like a giant Gummi Bear!"
Maleficent smiled, and replied"It's not a gummi bear, its a sourpatch kid. I didnt have long when we found you, and your body was destroyed beyond repair, so I had to put your soul in something. Since i'm a cruel witch who cares about no one but herself, has no life, and a femmish for cheese, I put you in the closest thing to me. A sourpatch kid that fat Pete over here dropped while stuffing his face, then made it human-sized.
"Is there anything else you could transfer my soul into?!" Sephiroth asked in worry.
"Well, a body without a soul... or a rock."Maleficent said," Wait, how about whoever's body is to blame for all of this. Then you'll get revenge, and a body."
"That sounds nice." Sephiroth said.
"So who's body will it be? Cloud's?" Maleficent asked.
Sephiroth was about to answer yes, which you could tell by his mouth movement, when he got an unexplainable look on his face.
"No," Sephiroth said,"Cloud's not to blame. It's that keybearer boy. Sora."
"Sora, oh wow," Maleficent said in an excited voice,"You may be getting revenge for more people than just yourself, and a VERY useful body, seeings how the keyblade chose him. According to my device that shows me where anybody I want is at, Sora and his friends just made it to Disney Castle."
"Disney Castle, huh, but haw do I go about getting there?" Sephiroth asked, now very excited.
"We will prepare a Gummi Ship for you. They will allow it to land in there since that's what they use for transportation,"Maleficent replied.
"Will I need a disguise?" Sephiroth asked.
Maleficent responded "No, everyone will think your too cute to do any damage, and with Sora's love for cute things, there's no way he will suspect you at first glance."
Shortly after the conversation was over, Maleficent gave Sephiroth his sword, and led him to the Gummi Ship. Sephiroth boarded the ship, and Maleficent said "If anybody questions you when you get there, give them a hug and tell them you love them, they'll forget all about it. And if they ask what exactly you are, tell them your a gummi bear person. We wish you god speed."
The ship began blastoff, and Sephiroth couldn't wait to get to the castle. To pass the time, Sephiroth listend to the Linkin Park Meteora cd over and over again until he landed.
When he climbed out of the ship, Queen Minnie approached him and said"Who are you?"
Sephiroth walked up to her, hugged her and said"I love you..."
"Awwww, It's so cute,"Minnie said.
"Could you tell me where Sora is at?" Sephiroth asked.
Minnie smiled and said "Go through the garden you'll enter once you leave this place, into a hallway with a big door in the middle of it, through the big door to a really unhumanly large hallway, down that hallway and under the awsome chair to the chamber of the Cornerstone of Light, and through the trapdoor in the back of that room."
"Okay," Sephiroth said as he began to run.
He ran through every place the queen mentioned, bumping into a couple of people on the way, until he got to the trap door. He pulled the door open, and ran inside to see Sora and his friends eating a giant snickers bar.
"stop right there!" Sephiroth screamed.
I know you were expecting a simple answer when you asked that quetion Aqua, but I hope you liked this better