|3rd POV|
The situation in Kyoto can be described in one way: Chaotic.
Spells get thrown around and create explosions that can destroy a good chunk of a city. Luckily for humans, they are already teleported away and hidden somewhere safe.
"Bwahahahaha! Good! Good! Rage! Rage! That is what it means to be a dragon!"
A blue dragon made of flame opens its mouth and releases a massive torrent of fire toward the eight-headed dragon. The fire hit the eight-headed dragon, but sadly, it did nothing as a dark energy shield.
"You might not be a true dragon, but you have our temper, girl! Keep at it and maybe you shall ascend to Dragonhood!"
After saying that, Orochi opens all his mouths and releases torrents of venom toward the blue dragon. The blue dragon thrashes around as it screams in pain. As the flame dies down, Kiyohime appears from the flame dragon.
However, before the venom from Orochi can cover her entire body, Ushiwakamaru appears and carries Kiyohime away, while Ibaraki appears in front of one of the heads of Orochi.
"Take this! Ora!"
Ibaraki roars and releases a massive torrent of Golden flame from her hand. The flame hit one of the heads, and the fire was strong enough to break the barrier around Orochi but not enough to injure the Evil Dragon.
The other heads of Orochi open their mouths and are ready to kill Ibaraki, but before they can do anything, five women appear. They are the same, but they are holding different weapons in their hands.
This is Minomoto no Raikou, and she is using her Noble Phantasm to summon the 'Four Heavenly Kings' to help her in this fight.
As for the rest of the heads, a hail of noble phantasms explodes and distracts it from attacking. In the distance, EMIYA shoots all the arrows he can create at the giant dragon. Each of the 'arrows' he shoots is an anti-dragon noble phantasm, and it shows the result as his attack injures the Evil Dragon.
"Anti-Dragon! Perfect! I thought this would be boring with that Dragon's presence in this place! Come!"
A purple energy explodes from within Orochi, throwing all the servants away from his location. Orochi continues to roar and summon pillars of light around him, creating a strong barrier that prevents the others from getting closer to him.
The servants realize something will happen if they let Orochi do whatever he wants, so they keep attacking the eight-headed dragon before them. While protected, Orochi decides to do something not many dragons can do.
He activates his authority, something only Gods can do.
Yamata no Orochi is not only an Evil Dragon but also a God, and as a God, he has the authority of a domain.
"Eight rivers rose in my wake, and eight lands drowned in my hunger."
"For that blood became venom, and that venom became ocean."
"Let the world drink from me now—let it choke on what it once feared!"
"By the curse of slain maidens, by the wrath of forgotten gods, let the Eightfold Calamity rise again!"
All eight heads of Orochi open their mouths, and suddenly, torrents of venom come out of their mouths. The venom is like a tsunami that washes away anything on its path, but unlike a tsunami, this venom also melts all organic things.
What makes matters worse is that it is very effective against Servants, for this venom is very effective against spirits, and Servants are versions of spirits.
The first one to notice the lethality of the venom is Raikou, as three of her clones disappear into nothingness after their legs submerge into the venom. Their only option is to attack Orochi from a distance; only someone who can fly should get close to the eight-headed dragon.
EMIYA looks at the dragon with a frown on his face. He is the attack dog of Alaya, but never in his long life did he fight against a God, one as infamous as Yamata no Orochi. He knows that Susanoo slays Orochi using the Totsuka-no-Tsurugi and breaks in the aftermath of the battle. That is when Susanoo found Kusanagi at the end of Orochi's tail.
Sadly, he cannot trace the weapon because he has never seen it in his life.
He widens his eyes when he remembers something. It is the same legend that Susanoo used sake to weaken Orochi, and then he used his sword to cut off Orochi's head. He looks around for a few seconds before his eyes land on a particular Oni.
Without wasting any more time, he appears next to her and says,
"Shuten, I need your help."
Shuten melts the last Oni coming her way and looks at Archer.
"Ara~ What do you need, Archer?~"
"I need your Noble Phantasm at Orochi for me."
She looks at Archer with an unreadable expression for a second before saying.
"You want me to use the tactic those humans use to kill me against my father."
In one of her legends, she is the child of Yamata no Orochi, and even though this Orochi is not her father, she can feel the same connection. There is a reason why she stays here instead of helping the others fight the eight-headed dragon. Her primal instinct tells her not to fight against him.
"Yes."
Without hesitation, Archer answers her question. His quick answer surprises Shuten, and after a few seconds, she chuckles and says,
"You are very brave, Archer~ Very well~ I shall use my Noble Phantasm on my father~ However, don't expect me to fight him."
"That is more than enough. We only need to hold him long enough for Zelrecth to finish his fight."
As he says that, Zelretch releases another blast of attack against Euclid Lucifuge. He can end the fight earlier, but doesn't want to leave long-lasting damage to his body. After the fight against the Crimson Moon leaves a permanent scar that can widen if he pushes his power too much.
This world is interesting, and he will fight to keep it intact, but he will not put himself in danger to defend it.
"Right~ Then let us join the others~ Ibaraki can handle these people~"
Before Archer can say anything, Shuten puts her arms around him and says.
"Now~ Take me there~"
Archer can only sigh and start running toward Orochi. He uses his Trace power to create swords that he uses as stepping stones so that he does not touch the venom on the ground. When he gets near Orochi, who is fighting against Oda Nobunaga, who is firing a hail of bullets toward him.
Her Anti-Divine boosted her attack, but sadly, he is more of a Dragon than Divine. It is effective, but not as effective as Anti-Dragon weaponry.
When Archer appears above Orochi, Shuten immediately activates her noble phantasm.
"Fufufufu~ I am sorry, Father~ But I wonder how your bones taste?~ Multicolored Poison - Shinpen Kidoku."
She pours her wine at Orochi and turns one of his heads at Shuten.
"You think your sake can make me drunk, mortal?! Only Divine Sake can make me drunk, fool!"
Two of the heads roar and create a massive shockwave that throws both Shuten and Archer away. Lucky for them, someone grabs them before they can fall into the sea of venom. The one grabbing them is a Karasu Tengu, the one who informs Yasaka about the attack.
Reinforcement is here, and they do not like the invaders who attack their homes.
"Orochi! You dare to show your face here?!"
The sky darkens, lightning rumbling in the sky, and the wind blows harshly. The one shouting is Susanoo, the God of Storm. He floats in the air and glares at the giant eight-headed dragon with all his hatred.
"Ah, Susanoo. Long time no see, brat. You've returned, and it looks like you're returning with my new rival, Ryan Hernandes."
Flying next to Susanoo is Ryan, who is already in his Dragonforce Sage Mode.
"Good! Then this fight gets even more interesting!"