This is just a short AU chapter on Demons in my story. Just some basic info that you can reference. Skip if you don't care.

Au info: Demons

AU Info: Someone asked, for some info, on demons and stuff so here it is.

Demon Ranks go: Power equals:

Lesser Demon/Demon Spirit Genin-Jonin

Demon/Fiend/Devil S-Ranked-SS-Ranked

Greater Demon/Greater Fiend/Greater Devi 1-8 tails are in the GREATER category

Archdemon/Archfiend/Archdevil Nine Tails is a bottom tier Archdemon

Demon's have a lot of power but little control. Fiends are the middle ground, while Devils have a lot of control, but low power.

Riley has the soul of an Archdemon, and because of that, she's classified as an Archdemon, rather then an Archdevil, which would more accurately describe her power. Riley has a lot of power, and immense control but since her souls is that of an Archdemon, that's what she's classified as.

Youki, is basically Demon Chakra/magic. It's what they produce, while humans, produce regular magic/chakra. Youki is thicker and denser then Chakra, making it harder to control, but also more powerful, as seen when Riley performs jutsu or casts spells, they usually cause immense damage. Youki also reflects emotion. It can be filled with anger and hate, to make the magic more damaging to opponents or it can be filled with lust or things like happiness to affect people in other ways. Basically what it is, is that the emotions are quite literally filling the air along with her youki so when people come into contact with her Youki or are around her, they can feel whatever emotions are being pushed through the Youki.

Now... before I go on I have to explain one little thing. I'm going to explain the difference between the tailed beasts power, and yes I count the zero tails as a tailed beast. I like the idea and the thing was kinda cool. I have a mathematical calculation for the difference in their powers, and I'll show it to you. It'll make sense, as to why the sage did it if you read all the way through. Also my proof for the power difference, all you need is to look at how Kurama could deflect a tailed beast ball from the two, three, five, six, and seven tails by himself, and he was only at half power. So while Kurama is the most powerful he doesn't have any special abilites. Anyway heres the list.

0 Tails Power = 1 100% control = 1 Can absorb chakra.

1 Tails Power = 1 100% control = 1 Can Control Dirt and Sand. Can also use his curse marks to seal things.

2 Tails Power = 2 100% control = 2 Can utilize hellfire

3 Tails Power = 6 90% control = 5.4 Can create it's own pocket dimensions, as well as manipulate, water/coral

4 Tails Power = 24 80% control = 19.2 Can use Lave Release

5 Tails Power = 120 70% control = 84 Can utilize Boil Release

6 Tails Power = 720 60% control = 432 Can use Acid Release, along with it's own slime to manipulate and capture it's opponents

7 Tails Power = 5040 50% control = 2520 flight, and control the wind

8 Tails Power = 40320 40% control = 16128 can use Ink Release

9 tails power = 362880 30% control = 108864 negative emotion sensing.

combined = 128056.6

10 tails = 409114 30% control = 122734

That's the power difference. As you can see, by how I formulated it, taking each number for the total power of the previous tailed beast, and multiplying it by the number of tails from the current beast, to get the actual power. Then add in their control to get their power output, which is how much they can actually use while the rest is lost. Also this is just in amount of magic, not their combat abilities, as while Kurama could easily outlast them in terms of magic amounts they could still defeat him by utilizing their special abilities or landing good hits on him. The sage did this, (And I) because with all ten of the tailed beasts combined, they would be stronger then the original ten tails. Thus allowing them to work together to defeat it, if it ever returned into the world.

Let me know if you have any questions.