The flames died down, and Yorihime looked somewhat surprised when she saw Rumia still standing, smoldering.
"I must admit, even if the flames were spread out so as to cut off any possible escape, the fact that you survived them is impressive." Yorihime said. "I presume for someone from the lesser world, you are pretty strong."
"I'm not from that world, but sure, group me with them. And this ain't nothing yet. I'm not gonna die here!" Rumia said, quickly taking a second drop from her vial, glowing with a slight silver aura for a few seconds.
"Hmm? Was that what I thought it was?" Yorihime said.
Rumia didn't let her think, she just flew at her, even faster than before, and stopped right in front of Yorihime, evadeing a sword-slash and fireball launched at her, before she unleashed a shotgun of lasers, knocking Yorihime back, before unleashing a massive barrage of Dark Energy blasts, causing a huge explosion.
"That one had to hurt you, even if you're that powerful!" Rumia said.
Suddenly, she felt a slash across her back. It was a shallow slash, clearly on purpose. A blurr went past Rumia, too fast for even her enhanced vision to follow, before she appeared in front of Rumia, and the aftermath of the Dark Energy.
Instead of the fire god behind her, was an athletic man in a toga, with a staff which had a planet marking.
"Speed of the Fleet Footed Messengers... Hermes." Yorihime said.
"I've never heard of that god!" Rumia said.
"He is not of the Shinto Pantheon. I can call upon the powers of any that I can communicate with, that allows me to call to them. It does not matter what religion. This god is from Ancient Greece." Yorihime said, before Hermes vanished, and a huge, three-legged crow with three eyes appeared behind her.
"And here is one you should be familiar with!" Yorihime said. "Despair, as I turn the power one of your allies has within her against you! Yatagarusu, grant me the absolute divine power, that drives the very universe, which creates and sustains all life!"
"Oh shiii..." Rumia began, before Yorihime fired a massive sphere of energy at Rumia, a miniature sun. However, unlike Utusho's, this one was blue. The minature sun was dispelled not even a second after it impacted. Enough to not kill Rumia, but cause immense pain and burns.
Rumia fell to the ground, and, upon impact, drank the third drop of the Elixir.
"I understand. Eirin's Elixir. She finished it. The Elixir that enhances one's power." Yorihime said, as Rumia struggled back up, her body healing the worst of the damage, as she felt more power surge through her.
Yorihime dispelled Yatagarasu, although she kept Amaterasu with her.
"I shall crush every hope you have of winning, Darkness Youkai. I shall show you that I do not even need a God's power to defeat you, even in this state."
Rumia formed a blade from Dark Energy, and gathered a roaring aura of Chi around her other hand. Then, she slashed at Yorihime.
The Lunarian raised her sword to defend herself, which was exactly what Rumia wanted.
"Bad move! This one's gonna hurt!" Rumia said, as she let the energy explode on impact, causing a massive eruption.
It did hurt. Rumia rolled back, feeling pain despite her tougher skin, as her own power was magnified.
However, Rumia saw Yorihime's sword spiral away, through the air, before she ran out of the lingering dark mists.
Rumia recovered, and threw her punch, with all her might and chi behind it.
Yorihime caught it, and then retaliated with her other hand. A fist directly to Rumia's face. Her vision blurred, as she stumbled back.
The Lunarian took a stance like a boxer, and quickly unleashed a barrage of lefts, to Rumia's face and gut, before a final right-hook.
'She's just toying with me... even with all this power... she doesn't even need gods to defeat me easily... I can't even hit her...' Rumia thought, as she fell, almost unconscious.
Rumia's vision was turning red. She wasn't sure if it was blood, a side-effect of Eirin's drug, or just her injuries.
"Let this get written into the very fabric of your being, Youkai of Earth. We Lunarians are superior to you in every, single way. You did well to last this long, even with your power magnified by Eirin's drug. However, it is over. The only one fit to fight me, one who walks side by side with the gods themselves, is my sister."
Rumia felt a throb in her head. A familar throb. She noticed the surface of the moon was slightly red, that was the red she saw. A very faint, red mist.
"I told you, Yorihime." Rumia said, struggling back up. "I am not of Earth. I also told you I will not die here."
"It does not matter where you are from, you are an impure creature, and I you cannot hope to stand before the might of the gods!" Yorihime said.
"Yori..." Toyohime's voice called.
Rumia smirked, as she saw a portal open behind Yorihime.
"Yes. I might not be able to stand up to the god's might. But I'll tell you what. Where I come from, there is a god there too. This god loves everyone like a mother. She invaded Gensokyo just because she thought one of her 'children' was kidnapped. So let me ask you, Yorihime..."
Yorihime turned around just as a figure came out of the red portal.
"Do you regard a God a worthy opponent!" Rumia and Shinki said at the same time, as the God of Makai herself blasted Yorihime back to her sword.
"W-who are you?! How did you pierce the barrier over the moon!" Yorihime said.
"Yori! She's incredibly powerful, I couldn't hold her back!" Toyohime said, flying over to Yorihime.
"Stay back, sister! I'll take them on myself!"
"Whoever this was messed with my barriers like it was child's play Yorihime. I'm going to ensure you win and back you up here."
Yorihime scowled, and then sighed.
"Fine. But who are you?!" Yorihime asked.
Shinki chuckled, and formed her body-size staff.
"I am the omnipotent God of Makai. I have many names throughout many worlds, but I shall tell you the one my people address me with. Shinki. And you only need know one other thing."
Six angelic wings formed from Shinki's back.
"I will defend those of Makai, like they are my children, as they are, ultimately, my own creations. I guess you could call this... Divine Intervention." Shinki said, before she blasted the sisters back, and flew over to Rumia.
"I guess you could say we're both side by side with God, Yorihime." Rumia said, as Shinki cast a spell to restore Rumia's energy.
The youkai looked up to Shinki, and grinned.
"Didn't expect to see you here, of all people. How did you know?"
"A mother's instinct." Shinki replied.
"Well, I'd be toast if you didn't get here, I don't think I could have held out much longer." Rumia admitted. "Careful, these two are both really strong, and the purple one can call upon the power of Gods."
"So... she's Moon Reimu?" Shinki asked. "I mean, Reimu has purple hair and she uses the powers of the Hakurei God..."
Yorihime looked at Toyohime as the two bantered.
"Are they ignoring us, or are they both just stupid?" Yorihime asked.
"We still should be on guard, Yori. If what this newcomer claims is true, this won't be easy."
"Oh yes, I forgot." Shinki said, turning around towards Yorihime. "It's not really a fair fight if Rumia can't use her powers properly, is it? It's pretty cowardly, if you ask me. Especially since you could be using even more power than you are now, if you were not devoting one of your two faiths to that Light God."
"What do you mean, two faiths?"
"It's simple to see, Lunarian. You use the charms and ornaments on your arms to communicate to the gods, and house their power, since it would be too much for your own body to contain. You only have two arms, and thus, can only call upon two gods at once. Not that using the power of two gods is really a weakness in most cases, but against me... you won't have the luxury of using one of them to suppress Rumia's powers."
"I still can us the power of one God for offense, which should make me evenly matched with you! And then there's my sister!" Yorihime said, before another god formed by her side, which looked somewhat like a kappa. "I call upon your holy waters, Mizu no Kamisama! The unrelenting force of the water, which eats the land! Sister let us combine our powers!"
"Yes. That would be best. After all, the connection between the Sea and the Mountain is the River..." Toyohime said.
"This dosen't sound good." Rumia said.
Yorihime made a fluid motion, before a large spout of water blasted out from in front of her, like a floating river. Toyohime then glowed, and the rushing torrent became even faster, and larger, twisting around, and taking a shape of a dragon at the front, before the water flew upwards, forming a massive, spiraling lake in the sky.
"Rumia. Stand next to me. This quantity of water crashing down would turn you into a paste." Shinki said.
"Torrential Judgement!" Yorihime and Toyohime said together, swinging their sword and fan down, before the water thundered down.
Shinki simply raised her staff, and formed a barrier, as the water crashed down around them. Rumia could see the immense pressure of the water blasting away at even the Moon's surface, re-shapeing it, flattening it. But Shinki's barrier stood strong, before the water stopped.
"Maybe if you had used a combined assault from the powers of two gods, I may have been overwhelmed." Shinki said calmly, lowering her barrier, taunting Yorihime, who looked livid.
"Yori, I can handle the Darkness Youkai... focus on beating this 'Shinki'."
"You can't stop her melting into the shadow, Toyo." Yorihime said, before she smirked. "Besides, I have an idea."
The Kappa-looking god vanished, and Yorihime pointed her sword at Shinki, and closed her eyes.
"I shall simply... call upon your power, if you are a God, Shinki!" Yorihime said.
An image formed behind Yorihime, a faint image of red and Shinki's silvery-blue hair color. However, it was nothing like the images of the other gods Yorihime had called before.
Then, suddenly, Yorihime flinched. The image of Shinki changed, and formed a sphere of flames, as if it was about to attack Yorihime. The image dispelled, and Yorihime gasped.
"You're not like... any God I know..." Yorihime gasped.
"Ah. I forgot to mention. I'm kind of... special for a God. I guess although the story is wildly incorrect, I would assume the name people of this dimension gave me was Satan. You could say I'm not a God... I'm the Devil." Shinki said, almost in a matter-of-fact tone.
"What." Rumia said.
"Didn't you figure that out already Rumia? You've seen my true wings. Makai is full of daemons, like Koakuma. It's filled with magical maisma that is toxic to most. Byakuren came back from Makai knowing some Dark magic, as well as her own Light Magic. You yourself are a Darkness youkai... well, Darkness Daemon, really."
"Well, if you're a Devil, that changes everything, Miss Shinki." Yorihime said, chuckling. "I know just the power to stop you."
Yorihime raised her hand. "After all, it sounds like you've met this particular power before. I wonder how it went! I call upon the Goddess that holds the Key that Seals and Unseals! I cal upon her power to seal the evils and impurities! Hakurei!"
"H-H-Hakurei?! That's Reimu's God!" Rumia said.
A beautiful, red-haired woman formed behind Yorihime, wearing a white version of Reimu's outfit, before several seal marks appeared around Shinki, and seals wrote themselves on her. Seals of light wrapped around her limbs, constricting her.
A seal would break, from Shinki's own efforts, but two more would form on her.
"Ultimate Sealing Art: Divinity Sealing Circle -Refresher-." Yorihime said, looking slightly tired.
Notes:
Mizu no Kamisama is another name for Suijin, the Water God.
Shinki is 'Satan' but as she said, the story is awfully inaccurate. Her nature as what is basically the Devil is why Yorihime's powers didn't work on her too.
Hakurei is the God of Seals and Barriers, which is the focus of Reimu's own powers, which are drawn from being Hakurei's Shrine Maiden.
Of course, Shinki remembers Reimu as a purple-haired girl, hence 'Moon Reimu'.
Shinki and Rumia have somewhat similar personalities. They're both pretty ditzy, and love to play around, while they also easily get overconfident with their own power in fights, but care a lot of those close to them. They would get along very well, even if Rumia's origins were not Makai.