[Two Thousand Meters of Scorched Earth, Crimson Hell]!
Instantly deployed flames and high temperature swallowed the Celtic battle formation where Fionn and the other were. Wherever flames appeared, Celtic soldiers basically didn't even have time to scream before being burned into charcoal.
Amidst orange-red flames, even Fionn managed to avoid being injured by the first wave of fire attacks only by summoning water currents to protect himself and Diarmuid in the nick of time.
But even so, after leaving the protection of the water currents, the two were sweating profusely.
This terrifying high temperature and flames—probably required at least B-rank [Magic Resistance] to move in this [Crimson Hell]!
Not only that, but the two also discovered two serious problems.
Diarmuid's [Gáe Dearg] (Crimson Rose of Exorcism) must face incomplete magecraft to nullify it. This was obviously completed magecraft; Gáe Dearg was clearly useless.
And many of Fionn's methods relied on summoning water currents to activate abilities. In this high-temperature area, his methods were undoubtedly weakened.
At least [Uisce Beatha] (Water of Life), this restorative Noble Phantasm, had no chance to be used. Probably before Fionn could sprinkle the water, it would have evaporated.
'It's him!' ×2.
The two, waiting in full battle array, looked at each other, both coincidentally guessing who the enemy they encountered was.
Although the two didn't see the comer's face, this suddenly appearing high-temperature fire field perfectly fit the tags Medb mentioned.
[Blazing Form, Three Thousand Flame Swords]!
Just when the two worried the comer would trap them to death with the fire field like this, countless washbasin-sized fireballs suddenly popped out in the sky. Then the fireballs flickered for a while, transforming into long swords made of flames, all pointing their tips at their location in unison.
'Isn't this a bit too foul?!!'
Watching this scene, the corners of their eyes twitched. Haven't even seen the person yet, releasing such strong magecraft so quickly?
Three thousand flame long swords fell.
Without hesitation, the two ran in two different directions separately.
Damn, how can we beat this? Run! Save one if possible!
Both were Servants known for agility, with Agility stats at A+ rank. The falling speed of flame long swords was fast but hadn't reached the level where neither could dodge.
So flame long swords smashed down leaving flame craters one after another on the ground, but never hit the two.
The remaining flame long swords shook for a while, simply starting large-scale destruction centered on the two's positions directly.
Fionn fully mobilized the magical energy in his body, forcibly creating water currents in a place with few water molecules to block the covering attack of flame long swords.
Diarmuid even turned two long spears into electric fans, wanting to use this method to block the flame attacks.
Obviously, this method wasn't safe. Leaving aside the high temperature burning his fingers, many flames broke through the defense circle, hitting his body.
But even so, it was enough for him to break out of the [Crimson Hell].
Seemed these two attacks were useless?
No! Of course they were useful!
Didn't the two separate?
The flames surrounding Diarmuid were torn apart instantly, but not by Diarmuid, but by—Takumi!
[Residual Flame Blade Coating, Mana Burst]!
The fire-attached Brahmastra slashed towards Diarmuid's body from bottom to top with the screeching sound of air.
At the same time, the flames behind Diarmuid also gathered again, turning into long swords aiming at his body.
Diarmuid: "!"
Combat experience tempered by thousands of battles told him the attack in front needed to be blocked. Combat experience also told him his [Magic Resistance] couldn't block the magic attack behind.
Two plans just passed through his head. His body decisively put [Gáe Dearg] in front of Brahmastra.
The flames behind might not kill him, but once the sword in front hit, he was dead!
Clang!
Ear-piercing sound rang out. In Diarmuid's horrified eyes, his Gáe Dearg was knocked flying by one sword strike, directly leaving his hand.
How high was Takumi's Strength? Even with the drag of the prosthetic arm, it wasn't something Diarmuid could block with one hand in haste.
Whoosh!
Brahmastra, about to be lifted over Diarmuid's head, flashed once. The direction of the blade changed, like drawing a "Z" in the air.
Flame-attached Brahmastra slashed across Diarmuid's body.
A flame-covered long sword, a fire-colored flag—this was everything Diarmuid could see in this one exchange.
Then Diarmuid's consciousness fell completely into darkness, and his body turned into two halves.
In the distance.
Fionn, who had already resolved the pursuit of flame long swords, possessing [Clairvoyance] skill and being in a bystander state, saw much more than Diarmuid.
He saw under the orange-red flames, a figure holding a flag and long sword with a face like an evil ghost standing in front of the separated body.
What was revealed on his chest was a scarlet pattern...
The person they were looking for, the person causing all this in front, was actually a Master!
Fionn was greatly shocked, but before he could think carefully, Takumi already turned his head to look at him.
Daring not to neglect, Fionn tensed his body, assuming a stance.
Watching the battle just now made him fully realize how fast "very fast" actually was.
Takumi calmly looked at the slightly nervous Fionn.
'Fionn... indeed a formidable enemy.'
Unknown if anyone watched the anime where Jeanne blew a biased whistle, aka Fate/Apocrypha. Darnic of the Black Faction stealing the Holy Grail right under Amakusa Shirou's nose was the result of Fionn's [Thumb Biting]. Just from this point, one could know how strong Fionn was.
Fionn's Noble Phantasm [Fintan Finegas] was a Noble Phantasm that obtained wisdom to break the situation by licking the salmon fat on the thumb.
Unfortunately, Fionn probably belonged to the type with bad compatibility with Takumi.
Mainly using "water" as attack means, in front of Takumi capable of creating high-temperature fire fields at will, unless near water or sea, he was basically countered to death.
Didn't dare to use the salmon fat on his hand casually either; biting the finger was the biggest opening.
'In that case, using this to deal with you is more appropriate.'
Takumi let go of Brahmastra in his hand, but the long sword didn't fall to the ground directly. Instead, it spun constantly in the air, turning into a "disc" in the blink of an eye.
This was the original usage of Rama's Noble Phantasm, i.e., throwing it out after rotating and charging.
Although Takumi found it somewhat hard to understand why a sword-type Noble Phantasm needed to be thrown to use, at this moment it was indeed just right.
Takumi raised the "disc" transformed from Brahmastra high. More than a dozen Runes turned into flames darting into it. Flames from the surrounding fire field gathered constantly towards the disc like a vortex.
[Fire Wheel Dance, Sure-Hit Pierce Through the Indestructible Rakshasa]!
The flame disc locked onto a range of three meters in diameter. Finally, with Takumi's forceful throw, it shot straight towards Fionn.
'Fuck!'
Fionn also wanted to curse now. Watching Takumi's action, already sensing from the unseen that this strike couldn't be dodged, he could only release his Noble Phantasm as well.
"[Mac an Luin]!"
Majestic torrents surged out from the spear body, rushing towards the already flying Brahmastra, bringing hard-won coolness to this fire field.