Disclaimer: I own neither Danny Phantom nor Yu Yu Hakusho.

Thanks for the idea, Shadow Guardian of the Gate.

Adopted crossovers:

DP/Labyrinth – Author: Angelic Gargoyle Artemis, Title: Labyrinth and Danny Phantom

DP/Yu-gi-oh – Author: Laryna6, Title: Shadow Spirits

The respective chapters have therefore been taken down from this fic due to ff . net's rules against double posting. If you wish to read them, find them on the profile page of the adoptee.

Please, adopt a plotbunny? Continue this fic? (Note: there is a chapter 2 of this one)

- - - - - - - - - - - -

"Our map of the ghost zone is almost complete." Tucker checked off another section on his PDA as Danny sketched in the version in his notebook.

"Yeah. I remember when you said I should go in the portal, Sam. I wanted to because there was this whole world out there with who knew what in it. And now we know, almost." Danny smiled at Sam.

"And if I hadn't sent you in there, you never would have known." She smiled back.

"I wouldn't have had ghost powers, either."

"Let's not forget, if the portal hadn't opened there wouldn't be ghosts all over Amity Park," Tucker pointed out, interrupting the moment that Danny and Sam immediately convinced themselves had not been happening.

"I've always wanted to be an astronaut. To boldly go where no one has gone before." Danny waved vaguely in the air. "It was so cool to go up there to fight Technis, you guys. I'm sorry I had to bust the rocket. I would have liked to borrow it again sometime."

"Good luck with that. It would be hard even for me to hack into Axion Labs' new ghost shield, Danny." Tucker shook his head.

Danny ignored him. "Maybe someday my parents will build portals to the other two worlds and I can explore those too." With Sam.

"Whoa, hold on a minute Danny," Sam spoke up. "Other two worlds?"

"Sure." He blinked at her. "Haven't you heard my dad blather on about them? There's the Ghost Zone, the Spirit Zone and the Demon Zone. The Spirit Zone is where people who pass on peacefully go, the Demon Zone is home to things that have bodies like humans but also have ghost powers."

"They're alive but have ghost powers? Like you, Danny?" Sam was excited.

"Hold on a second. Demon Zone? That doesn't sound good. I hope your dad doesn't build a portal to that one. We've already got a major ghost problem." Tucker put a damper on Danny and Sam's enthusiasm.

"Don't worry, Tuck. My parents are all about the ghosts. They wouldn't bother to build portals to the other two Zones. Actually, there used to be a fourth Zone, it was where things from the Demon Zone went when they died, but it was destroyed. Cool, huh?"

"World being destroyed? Very not cool, Danny. What happened?" Tucker asked.

"They fought a war with the Spirit Zone. Relax guys, nothing's going to happen when I'm around." He grinned heroically.

Sam raised an eyebrow. "Danny, you're starting to remind me of the not-fun Danny."

He winced.

"I call the fun Danny!" Tucker grabbed Danny.

Danny and Sam stared at him. "Sorry, reflex. Just kidding."

They both laughed.

Then there was a loud noise outside. Sam peeked out. "Danny, it's the wishing ghost. Why does she hate you so much anyway?"

"I was fighting her! Geez, it's not like I groped her. Going Ghost!" He went invisible and flew out of the room. Outside and a couple blocks away, he yelled, "No one wish for anything!" to the fleeing people.

"I wish for ice cream!"

"I wish for a million dollars!"

Desiree laughed.

- - - - - -

Yusuke glared. "So this is the big scary S-class demon Enma's got his knickers in a twist over?"

Koenma nodded. "The Observants saw a future in which he turned evil and destroyed the city he lives in now while you were off training in the Makai. Human spirits with demon powers, the ones that dwell in the 'Ghost Zone' that is at the nexus between the human realm and the Makai are always dangerous. When they also have the potential to have spirit energy they are doubly dangerous. He has already developed an ability known as the Ghostly Wail."

"Oooeooe spooky?" Yusuke snorted. "At least he hasn't sent people to kill the kid like he did me."

Koenma stayed silent. "Your dad did, didn't he?" Yusuke looked a little impressed, glancing at the kid in the TV monitor. "How did he survive?"

"He didn't sent the troops, he sent the Observants to tell a ghost named Clockwork who has been of help to the Reikai in the past to do it."

"So what happened?"

"Clockwork cheated."

"Really? Good for this Clockwork guy. How?"

"He arranged things so the boy was manipulated into making a choice to not be evil. He sent him to see the future that would result… and now that evil future self of his is trapped outside of time. Even preventing him from happening didn't destroy him. You might have to fight him someday, if he escapes Clockwork. That's why I'm briefing you now, Yusuke."

"You're never going to let me retire, are you? Well, bring it on." He grinned, and you could see the demon in him when he grinned. "I love a good fight. 'Ghost powers' huh?"

"A mix of demon powers and spirit energy." Koenma nodded.

"Sounds fun. So what do you want me to do?"

"For now, nothing. My father was satisfied with Clockwork's assessment and won't send the troops to kill him. Unless, of course, he does something that points to him one day becoming a threat to Earth or the Reikai that Clockwork can't stop."

"I'll beat some sense into him first." Poor kid hadn't asked for this any more than he had. Saving the world from this Pariah Dark should count for something, right?

"Or unless the evil future self escapes. According to our records he's only confined in a human artifact."

"Why don't you give this Clockwork something tougher to stick him in?"

Koenma sighed. "Saying Clockwork can't keep his own prisoner confined would be rude, Yusuke. Not that you care. This is just a briefing so you know about the situation, Spirit Detective."

"If you're done wasting my time, I've got a date with Keiko to get to before she decides to pound me for being late." He grinned. "Girl has a kick like a mule."

"You are dismissed." Koenma looked important.