What if Jesse went with Sam and Dean

"OK, I'm ready," Jesse said as he came back downstairs. He hadn't woken his parents up to say good-bye. It would have been too hard. He had just left them a note.

"Let's go," Dean said and picked up the Castiel action figure. He really had to figure out how to get Jesse to turn him back.

They went out to the car. "Shotgun," Jesse called.

"Yeah, I don' t think so," Sam said.

"Let him ride in front," Dean said.

"Fine."

Sam climbed into the back. He tried to remember the last time he'd been in the back seat. He was pretty sure it was that time they had worked that case with Jo and Ellen had flown out. Ellen was too scary to argue with.

"So, Jesse, any chance you might want to turn Cas back?" Dean asked, hesitantly.

"He tried to kill me," Jesse reiterated.

"He made a mistake. It won't happen again," Dean assured him.

"Promise?" Jesse asked. He trusted Sam and Dean. He wasn't sure why. He had just met them and they had lied to him. But he still trusted them.

"I promise," Dean said, certain that once Castiel knew that Jesse had exorcised a demon and willingly come with them, that he would make any more assassination attempts.

"OK," Jesse said. "How do I fix him?" he asked.

"You mean you don't know?" Dean asked. This wasn't good.

"No. I don't even know how I did it in the first place."

"You visualized it," Sam said from the back seat. Just concentrate and visualize him as he was before," Sam said. "It might help if you close your eyes."

Jesse closed his eyes and visualized Cas fully grown sitting in the back seat next to Sam.

"Hello," Castiel said to Sam. He had heard and seen everything going on while he was miniaturized. He had been impressed when the kid had sent the demon packing. Maybe Sam was right. Maybe he could make the right choice.

"Sam, how did you know how to tell him what to do?" Dean asked.

Sam couldn't believe he asked that. He had to already know the answer. "It's what Ruby taught me," Sam said.

"Oh," Dean said. He should have realized.

SSS

"Did you call Bobby and tell him we were coming?" Sam asked as they pulled into the yard.

"No, did you?"

"Obviously not, or I wouldn't have asked."

"Well, I guess we tell him now," Dean said as they approached the door. Dean knocked.

Bobby opened the door in his wheelchair. "Who's this?" he asked looking at the kid.

"This is Jesse," Dean said. "Jesse, this is Bobby."

"Well, come on in," Bobby said, not sure where they got a kid, or why they brought him here.

Jesse thought back to what Sam said earlier, closed his eyes, and pictured Bobby standing up.

"That's weird," Bobby said.

"What?" Dean asked.

"I feel something in my legs." This was the first time he had felt his legs since he had stabbed himself. He decided to try standing up. He pushed himself up from his chair. He took a tentative step forward.

"Jesse, did you do that?" Sam asked. He had noticed that Jesse had closed his eyes and scrunched them up like he was concentrating hard.

Jesse nodded. "I didn't do anything wrong did I?"

"Not as far as I'm concerned, kid," Bobby said. He still didn't know who this kid was, but whoever he was, he was awesome.

"Jesse, you're probably tired. Why don't you go upstairs and get some sleep?" Dean suggested.

"OK," Jesse said.

When they had checked to make sure that Jesse was all the way upstairs and not lingering on the stairs listening, they got down to business.

"So, who is he?" Bobby asked.

"The anti-Christ," Castiel answered.

"So, he's the devil's son?" Bobby asked.

"No," Castiel answered. He was not going to explain everything all over again.

"He's half-human, half-demon," Sam explained.

"So, is he evil?" Bobby asked, trying to reconcile an evil demon, with a kid who just healed him for no reason.

"No," Dean said. "He's just half-human, half-demon."

"He's very powerful," Castiel supplied.

"Well, I can tell that much. Why did you bring him here?"

"Demons are after him."

"So, you brought him to me? Idgits."

"He's pretty well cloaked," Castiel assured him.

"Well, what am I supposed to do with him?" Bobby asked.

Dean realized he hadn't really thought this through. What was Bobby supposed to do with him? "Maybe we should worry about this in the morning.

Bobby rolled his eyes. Castiel disappeared. "Can't he ever just leave like a normal person?" Bobby grumbled.

SSS

In the morning, Dean went outside to help Bobby with some cars. Bobby was glad to be out of the chair. He had been managing the cars pretty well, but this was so much easier.

Sam was inside making breakfast. Jesse came downstairs. "Sorry, I slept so late."

"That's OK. Yesterday was a long day."

"Where's everybody else?"

"Dean and Bobby are outside working on cars and Cas left last night."

"Sam, can I ask you something?"

"Sure."

"You said that you had to believe that I could make the right choice because you didn't. What did you mean by that?"

Sam sighed. He didn't exactly like telling this story. "A demon bled in my mouth when I was a baby. When I grew up I had visions. When Dean killed the demon the visions went away. Well, soon another demon came to me and convinced me to drink her blood so that I could use my psychic powers to kill demons. So, I did. It turned out that killing this one particular demon broke a seal that started the Apocalypse and set Lucifer free. Everybody tried to warn me, but I didn't listen."

"Why didn't you listen?" Jesse asked.

Sam shrugged. "Ruby just didn't seem like other demons. She always said the right thing, always encouraged me. I don't know. It sounds so stupid now, but it made so much sense at the time."