This is set both in the unchanged future before Chris went back and in the past just before the season six finale.
This chapter has some very, very light slash in it.
I don't own Harry Potter or Charmed.
San Francisco, 2026
"I'm not so sure about this," Chris said with a grimace. He ran a hand through his hair and sighed.
"Of course you are," the other boy answered with a roll of his green eyes. He was leaning back in his own chair and watching Chris. "I thought you said you knew the spell would work."
"It's not that. I am sure the spell will work. The books mine just as much as it is his. It'll come when I call it. That's not what I'm unsure of." At the raised eyebrow he got in return, Chris stood from the table and paced the small room. "I'm just…I'm not so sure I can keep this from them when I do go back."
"Harry…" Chris abruptly dropped back down in his seat. "I can't tell them. I mean, what if it changes something for the worse-"
"That's not why you don't want to tell them who you really are," Harry interrupted him.
"Maybe not. Maybe I'm just afraid I won't be able to pull it off if they do know. Maybe I'm just afraid I won't be able to focus." He paused. "There's another issue."
"No, there's not," Harry said with an air of finality in his voice. "We've already discussed this."
"It's not right," Chris insisted, not for the first time. "It's not right what happened to you or to him."
"You can't change what happened to me. Chris, I have to go to Hogwarts. I have to. If I don't, you saving Wyatt will be useless."
"Right. You're the only one who can do it." Chris wasn't completely convinced. He'd heard the story several times and knew why.
Harry frowned at his skepticism but stood anyway and Chris followed suit. "The tour should be starting."
"Yeah." Chris glanced over at him. "You know, changing Wyatt's future changes ours too." This was something both Harry and Chris had avoided discussing.
"I know." Harry smiled. "Don't worry. We'll meet each other again. It has to happen. It's meant to happen."
Chris turned to him and put his hands on the sides of Harry's face. "It better be," he said and kissed Harry softly.
Harry smiled into the kiss. "We should go," he said when Chris pulled back.
Chris orbed straight into the backyard. It was late. His mom, Paige and Phoebe had finally gone to bed. They had, along with Leo and Gideon, been working on a way to get him back to the future and were pretty confident that the potion they'd made would work. If it did, he'd been gone in a few days. He had to do this first.
He'd been around there often since coming back to the past and it was beyond weird speaking to a four year old Harry but it was worth it. Harry trusted him, believed him.
Sure that the other three people who lived in the house were fast asleep, he orbed into the kitchen and silently made his way to where he knew Harry was sleeping. As quietly as possible, he opened the door to the tiny closet.
"Still torturing yourself?" The voice came from behind Cole and he turned. He'd dropped in on the sisters from time to time and he knew who the boy standing before him was.
"What are you doing here?" Cole asked, gaining his composure quickly. "I am pretty sure you don't belong here."
"Seeing as how I'm not dead yet." Chris shrugged. "I don't have a lot of time. I used a spell to get here and if my mom or aunts find my body up in the attic, they're going to freak."
"And why are you here? If you came to lecture me about past crimes or to warn me away from them…" He spread his arms. "I think the girls took care of that."
"But you do get out," Chris said. "I know you still drop in on them. You know who I am, where I'm from. You will get out. It'll be a few years but you do get out."
"Ah. So, you've come to tell me about crimes I haven't committed yet?" Cole guessed.
"No, actually. I came to speed up the process," Chris answered with a grin. Cole crossed his arms and there was just a hint of surprise in his eyes.
"You want to get me out? Why? So the girls can vanquish me again? Then wouldn't you be right back where you started?"
"No…" Chris sighed. "Look, like I said before I really don't have lot of time. Paige and Phoebe's sleeping habits aren't exactly normal sometimes and I really don't want to have to explain this to them. I'm here to talk about Lily Potter."
Cole straightened and his eyes narrowed. "Lily Potter."
"Yeah, I've heard the story, you know? A few of years ago, after Phoebe faked your vanquish and you thought you'd never see her again…and then there was Lily, who thought her husband, James, was dead after a raid. You guys hooked up, didn't you?"
"How do you know about that? I never told anyone." And Cole wasn't looking suspicious anymore, just angry.
"Doesn't matter how I know. What matters is what happened after that. Harry got some of it from a wizard that was there. Said James wasn't actually dead and they got him back. Lily and James got back together-"
"And the point of this story is?" Cole asked, irritated.
"The point is Harry. He's Lily's son. I don't know if she knew or not. I don't know if she told James but they were going to raise Harry even though he wasn't James son. They were good people, both of them and if Lily did tell James, he didn't hold it against Harry or her." Chris met Cole's gaze and he saw the stunned look in Cole's eyes.
"You're saying that I…" Cole trailed off and shook his head, forcing himself out of the shock. "Why are you telling me this? I'm dead, remember? Stuck here for eternity. And if these people are really good and willing to raise the kid…"
"No. I'm telling you this because James and Lily Potter are dead, Cole. I'm telling you this because you need to save your son from spending his childhood in the care of Lily's sister and her husband, who will hate him for no other reason than the fact that he is magical."
"You think it's better that I raise him?" Cole asked incredulously. "I don't know if you know my history, kid, but I'm not exactly a role model."
"You were in my future." That stopped Cole and Chris gave a half smile. "Like I said before you do get out of here. And I do know your history. I know you never wanted to become the Source. I know you only took in the hollow to save the girls and it backfired on you. I know all those powers you got from the wasteland drove you insane. I also know that when given half a chance, you are a good person and I have a way to get you out of here and to restore your balance."
"My balance?" Cole asked with a wary look in his eyes.
"Belthazor. You were right before, Cole. Phoebe never should have stripped you of him. It was what allowed the Source to take you over. Belthazor was always supposed to be a part of you. You were born with that demon."
"And you have that kind of power?" Cole asked skeptically. "You have the power to pull me out of limbo and restore something I lost nearly three years ago?"
"Not by myself. There's…someone who owes me a favor. According to him, this is doable as a payback. There's some things I need to tell you first."
"Like what?" Cole still looked skeptical.
"I put a spell on Harry. It hides his identity from everyone. Mom and her sisters used it one time. It fooled everyone, including the demons. I did make a promise to Harry that I have to keep, though. It'll only hide him until the right time."
"The right time?"
Chris nodded. "I'll tell you everything later. Right now, I need your agreement on this."
Cole took a few steps closer to him. "I have revived Belthazor before, you know? That did not end well."
"You were different. Besides you didn't just revive Belthazor. You also killed Paige. If there is something I know, it's that finding Paige is what helped Mom and Phoebe the most after Prue died."
"How do you know that?"
Chris shrugged. "They told me." Cole turned from him and Chris sighed. "Look, I have seen the future and I know who you are. I've seen you with Harry and I am telling you…you have to do this, Cole. You can't let him grow up with those people."
Chris let out a relieved smile when Cole turned back and thought that his Harry would be pissed at him for interfering but he just could not let these kind of injustices stand.
Days later, Chris Halliwell died in front of his father. Still, he faded away with a sense that he had at least succeeded. His father would save Wyatt and he had saved Harry and Cole years of pain.
First chapter and, yes, I know it has a lot of unanswered questions. Like who helped Chris get Cole out of limbo but if anyone's interested in this fic that will be answered later.