A/N: Hey! Welcome to my first crossover I hope that it is enjoyable and I'm hoping that my writing has improved since I was formerly dead to the world of writing fanfiction. Anyone who read my Naruto story Falling Upwards and liked it, don't get discouraged, I will update that as soon as I figure out what the heck I was doing with that story lol.

Disclaimer for all chapters: I do not own Danny Phantom, nor do I own Yu Yu Hakusho, although I am plotting to turn the United States into a monarchy under the name of iHugBears. That, however, still does not allow me to own those two series .

Prologue—First Strike

Vlad Masters, although a very unlucky man, was not stupid. He had lost the love of his life to a buffoon, but he was still smarter than said buffoon. He had lost his original plans of world domination to the buffoon's child, but even still, he had his brain. If he had that, along with the power that comes from being the reigning halfa mayor of Amity Park, then he could do anything.

Anything, even, like discovering another world entirely.

Vlad closed the book in his lap (courtesy of the ghost zone library), and began to look into his computer for any rumors or information on this "parallel ghost zone", or better known as "Reikai".

I bet that Fenton won't know about this world, and then even Daniel cannot stop my power when I find a way to take control of this world. And with the control of the world, Jack Fenton will be nothing and I can have Maddie again.

All Vlad needed to do was find a way into this "Spirit Zone" and use its assets to give him enough power for his goals.

Then the world could be renamed in his glory! And his first decree as supreme ruler would be to forbid the name Jack from appearing ever again!

"Clockwork. I find that I am in need of your assistance." The old, blue ghost with the long white beard turned to look at the half-ghost.

"Vlad Masters."

"It's Plasmius now, Clockwork. Or can you not tell what form I am in in your old age?"

The old man then became a child, complete with buck teeth, minus the beard.

"Past, Present, Future. It truly does not matter what you are called in the present, because that will become the past and was once the future. Time is not solid, Plasmius."

"Nor are dimensions, apparently."

"Maybe not."

"I want to know if you have access to this so-called "Reikai" that I have recently learned about."

The young child then became a man in his mid 20s to 30s. No beard, no buck teeth.

"I have heard of this place, some time ago."

"You haven't answered my question."

"You didn't ask one. Will you?"

"FINE. Do you know about the Reikai?"

"Yes, I believe I will. In about 3 weeks or so."

"What are you… Nevermind. Do you have access to this world?"

"Again, I do, but in about 3 weeks."

"You know, if I was an English teacher, I think I would gut you."

"Good thing you won't be."

"You're messing up the tenses again."

"They are all the same. Past-"

"-Present, Future, yes, I know. Can you give me anymore information regarding this world?"

"What you seek cannot truly be found in another world, Vlad. You would be better off staying here. I have seen what you want to do, but it will only destroy you."

"Now you have the right tenses? I want an answer to my question."

"Very well. This world of which you speak, the Reikai, is one that is ruled by the gods of death, well, the god of death and his son. They oversee the moving of souls from one world to the next."

"Is there any way at all for me to get there? I would like to see it for myself."

"It is pointless to lie to me, Masters. I will see your true intention, if I have not already seen it."

"Fine. I want an item that will give me enough power to take over the world, or rather, the worlds."

"I have a feeling that I knew you would say that"

"… (What?) ... What would you like in exchange for a portal to this world?"

"I need nothing. Not now, or before, or later."

"You're not a goody-two-shoes either. You help who you want because you want to. I know that you didn't save Daniel because he was 'on the side of good'. You just liked him."

"That is true. He will be an interesting character to have around. This then, is my condition. You are not allowed to kill or otherwise destroy Danny or anyone that he holds dear, even during your takeover attempt. If his mind was ruined in such a way, then I would not be nearly as entertained by his antics as I was in the present."

Vlad's first thought after such a statement was "He really needs to pick a tense and stick with it." His second thought, however, was much more devious:

"What if I were to change his perspective on those who he holds dear? What if he no longer loved them?"

"Then in that case you may do what you will. But don't kill everyone."

"Oh, no, Clockwork. I have someone very specific in mind."

"I will hold you to your condition. If you break it any time from now on, I reserve the right to remove you entirely from that timeline and alter the course of your attempt and make sure you have failed."

"Understood. Nice making business with you. When will you open the portal?"

"When you are ready for it to be opened. I'd say, about 3 weeks should do."

That's why he kept saying 3 weeks… "I shall see you then."

"Farewell, Plasmius, for now."

To Be Continued

A/N: Well, there's the prologue. Please review and tell me what you think! And please let me know if you see any errors, that would be greatly appreciated! Thanks!

-iHugBears