This is, as you might have guessed, post-series for YYH, but the Reikai Tantei is still active. Yes they were disbanded by Koenma's father, but I'm pretty sure Koenma wrestled control from Enma and became the new ruler, so the team still gets sent on missions and such, but Koenma hasn't officially named them the new spirit detectives(since technically everyone but Kuwabara is a demon).*however that doesn't mean Koenma is going to tell SHIELD that*

Also, thanks for the reviews everyone! They mean a lot to me!

Disclaimer: I own neither YYH, or the Avengers

Natasha narrowed her eyes from the vantage point of a high rooftop. Fury had assigned her to watch a 'Shuichi Minamino,' one of the intruders. She was currently looking at him through a pair of high tech binoculars- he had just gotten home, and now it was time to put all those listening devices she had put in place earlier that day to hear what was going on.

'Tadaimasu, okaaa-san'

'Ah, Shuichi-san, okaraerinasai.'

The conversation went on. It was typical, boring, and polite all rolled into one.

So, he puts on an act for his family.

She had been shown footage of the two teenagers visit, and this boy had definitely been the leader, and the more clever of the two. The other- Kazuma Kuwabara- was also being watched, though not by anyone near as high ranked as the Black Widow was.

She watched and listened as the rest of the family greeted him, and he said something about going up to his room to get changed.

She sat studiously on the roof top, careful to not think about how long this might last. Natasha could be a very patient person, but watching a teenage kid go through everyday life was not how she wanted to spend the next few weeks until something happened.

Perhaps some kami passing by heard her thoughts, because several seconds later, something did happen.

"I thought I smelled something foreign."

That voice-

She made a one eighty and pulled out both guns in less time than it took to blink.

The white haired demon just smirked. "Spying on Koenma's little friends now, are you? How quaint." He began to run hand through his hair, but she tensed her two fingers on each of the triggers.

"Don't move. I saw what you did last time."

He paused, hand inches from silvery tresses, and his eyes gleamed with pleasure. "You noticed. I'm flattered. You're very quick- for a human anyway."

"I'll take that as a compliment."

"You should. Most humans can't even follow me with their eyes when I move that quickly- you almost hit me."

"So if I'm that good- why are you here, putting yourself at risk?"

"I'm a curious demon."

"And here I thought those were fox ears."

"Oh, they are. Kitsune can be just as curious as cats. We're just more clever about it."

"And how is approaching an armed opponent on her chosen ground clever?"

"Because," He dropped his arms slowly, letting his clawed hands fall open and in clear view at his sides, "I can do this."

Before she could react, vines shot up from the side of the building and began to wrap around her. She shot reflexively, but the demon moved too quickly, and her arms were being jerked by the vines. Then, suddenly, she had no space to move in at all.

Fooled me twice, shame on me. This is not happening a third time.

Thankfully, her arms were at her sides, which meant- ah there it was. She began sawing at the vines as best she could while only moving her wrist slightly. If she could get out of this . . .

She made a show of grunting and trying to struggle, then gave him a haughty glare. "Are all demons like you?" Come on, I need more information.

"Oh, no, like I said before, I'm one of the nicer ones."

"I meant, with the plants. Or is that just a fox thing?" Just keep talking, I'm almost through-

"Trying to get more information out of me?" She pursed her lips and glared at him. "Well, I'd be happy to comply. It's not like we're enemies." That is to be decided. But at least he's willing to talk.

"Demons manipulate their . . . demonic energy, generally called youki, due to the large number of demon inhabitants in Japan versus all other countries. Each demon usually has a different specialty. Mine, as you've already noticed, is plant manipulation. I've met those who can control wind, explosives, even yo-yos. Some can even make their energy form an actual energy weapon, like a sword." He smirked. "I suppose if I were to try and explain what that was like, I would say it was similar to a light saber, only made up of the demon's own energy."

Now, just keep talking, while I finish off the vines on my other arm. "So, if we're not enemies, why am I all tied up?"

"Because, even though we have shown no hostility towards SHIELD, you are here, spying on us."

He used 'us.' Why?

"Those of the Reikai Tantei do not take kindly to spies."

'Spirit World Detectives?' "What do you mean, Reikai Tantei? Are you a part of some sort of team?"

"Do your research. I'm sure you'll find something on us."

She was about to make another inquiry, when she felt the vines on her hands loosened enough that she knew she had cut them enough to get out of this predicament. Finally got it. My guns are trapped somewhere in vines, which means- she threw her knives.

He jumped out of the way, but not before she saw two slivers of blood on his cheek and arm. She held out her hands as a guard, and faced him, waiting for an attack.

"Always so eager to fight."

"You attacked first."

"You intruded first."

"Touché."

He caught a droplet of blood on his finger then licked it clean, eyes never leaving her. "Well, why don't we call a truce? I gave you some information, so you stop spying on the two humans."

"I'm only spying on the one."

"I know there's another at the other boy's house."

How? It's at least four stops on the train away. It would have taken an hour for him to run . . . are demons really that fast? I didn't hear a vehicle approaching before he got here. . .

"I'll talk to Fury."

He smiled. "That's all I ask."

And with a whisper of movement, he was gone.

Several moments later Shuichi returned downstairs.

Natasha packed up her gear, and headed down the fire escape.

It was time she made a report to Fury. She had some interesting information.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . TBC . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

A/N: So, how did you like? And, just so you know, this is not a Natasha/Youko fic, even if it really looks like it (although the thought did enter my head). I just re-watched the Avengers, and was once again amazed at how BA Black Widow is. I think she could even be a match for Kurama, if he didn't have his youki abilities. They're both very well matched, and experts of deceit.

Tadaimasu: I'm home

Okaa-san: mother

Okaerinasai: welcome back

Also, just a note, you might have noticed a few things Kurama was leaving out. Mainly, he attributed Kuwa-kun's ability as a demonic ability, and didn't mention that humans could manipulate their energy as well. Also, he knows about the spy at Kuwabara's house because of Hiei(and his Jagan). But he left this out mostly because he didn't want them to know about more demons in the area/ he wanted them to overestimate his abilities and therefore feel the need to back off.

Edited 6/9/2015