Despite the fact you were about to seal the deal with Rin and claim her ass as your own, you can't say you were disappointed by the interloper.
Sure, you'd known they were in the general vicinity for a while now, Lancer could could sense the servant, and the connection you shared with them.
Them being a Master of Red, just like you.
A lucky stroke really, it meant one less person for you to track down later. But, the sensing went both ways, and they could apparently sense you and wandered over.
So, you figured you may as well call them out, while you didn't care who watched on, you get the feeling Rin isn't really into voyeurs.
But my were you surprised by the other master of your faction.
"Holy ravioli, what a cute little loli." you felt yourself grinning like the wolf that just came across that little slut red riding hood shaking her slutty fat ass in her tiny little skirt.
That was some good porn.
While she wasn't absolutely sexy like Sakura, Rin or Rider, Caster and Lancer, she was attractive in a completely different way. Skin of porcelain, hair white as freshly fallen snow and glittering crimson ruby red eyes.
The Grail War really was the best. All these exotic and beautiful females just popped up one after another. Viva la Grail War!
The cute little fairy-like girl giggled at your words, "You're a weird one onii-chan." she replied.
"I like to think of myself as cultured." you shrugged in response. Truly, was there any man in the world that was as cultured as you?
"Seriously Kei?" Rin huffed, rolling her eyes at you, "It wasn't enough to hound me, but now you're sniffing around the first little albino that strolls along." despite her words, you could see how tense she was.
…Did she know something you didn't? Sure the little fairy girl was a master, but you were you, even if she attacked with her servant, you'd kick its ass before it could pull off its Noble Phantasm.
But Kei huh? You couldn't help but grin. Rin really was just jumping right in.
It made all your carefulness the last few years seem like a waste. Perhaps if you'd approached her sooner, you'd have already claimed her as your own?
Truly, you supposed, not even you were perfect.
Yet.
"There's no need to feel threatened Rin, I'm not here to steal your man," the white haired loli smiled at Rin, a bit smugly in your opinion, before grasping her thick purple coat at the waist and lifting it a bit and curtseying, "I am Illysaviel, Illysaviel Von Einzbern, it's a pleasure to meet you both, Rin, Onii-chan."
"…As I thought, a homunculus from the Einzberns." Rin tensed
"Einzbern?" you cocked your head to the side. They were one of the three Great Families that made the grail war in the first place alongside the Matou and the Tohsaka.
"That's right Onii-chan~" the white haired girl chirped happily, a marked difference in the way she treated you compared to Rin.
Ah, was it love at first sight? Well, you couldn't blame her, you're amazing after all.
"What faction are you in Einzbern?" Rin demanded.
In response, Illyasviel snorted in amusement, "The Tohsaka sure are pretty pathetic huh? You asking that means you haven't even summoned your servant, how pathetic," she roasted Rin, then looked to you, "Are you sure you should be offering so much for someone so incompetent? It looks more like she should be paying to be your woman onii-chan."
Rin clicked her tongue before you could response, before smirking at the girl, placing a hand on her hip and cocking it out noticeably, "On our team I guess then," she snorted, "And the reason Kei wants me is because I have something you'll never have you little brat."
"Oh?" the little girl cocked her head questioningly.
"An ass all men want to get their hands on," Rin preened smugly, "You're just a little factory doll from the Einzbern, you'll stay a little curveless loli till the day you die, no real man wants anything like you."
Well usually, she'd be right. You had no interest in little girls, but this girl looked only a couple years younger than yourself, and had an ethereal beauty about her that made even you take notice.
Before you could give your input on the subject, a deep shuddering breath left Illyasviel and she clicked her tongue, ruby red eyes narrowed, "…You know Rin, I was actually going to be fine letting you live, we are in the same faction after all, even if I don't need anyone else to win this grail war," the white haired girl said, "But I've changed my mind, I'm going to have Berserker squash you."
As she said that, there was a shimmer of light behind her, and then where nothing but air sat, stood a towering behemoth of a man. Titanic almost in size, approaching ten feet easily, with skin like stone and gigantic rigid muscle like boulders. Inky black hair fluttered in the wind and hissing mad red eyes glaring bloody murder at Rin, the killing intent the beast of a man was unleashing enough to make a deer lock up and die of a heart attack.
"….W-what is that!?" Rin gaped, body trembling in fear. You couldn't exactly blame her, she wasn't you, and had no servant of her own.
Frankly, if you weren't here, she'd be dead meat.
"This is Berserker," Illyasviel explained happily, "You might know him as Herakles, the strongest hero to ever exist, and the strongest servant by far."
"…Herakles, the greatest hero of the Greek myths…!" Rin noisily swallowed in pure fear.
Hoh, so this was the half breed son of Zeus then? He was quite remarkable. Not as amazing as you of course, but this little loli had done herself quite well indeed.
"Indeed, and now Berserker, kill her!" Illyasviel ordered.
Berserker roared like a monster and exploded forward with such speed and force the ground splintered beneath him.
…This trash!
Demi-god or not, he dared to ignore you and go after your woman!?
"Orah!" before Berserker could smoosh Rin, you exploded forward yourself to meet him and as he appeared in front of her, your fist met his cheek.
The sheer force and speed of your punch kicked up a sonic boom and you felt your fist meet his cheek.
"Learn your place weakling!" you spat.
Only, the expected outcome did not occur.
Yes, Berserker did stop, but your punch that could crumple a car as if it were paper mache..barely even managed to turn his face a bit to the side!
What?! Impossible!
Crimson red eyes moved away from Rin to lock onto you, and then, "!!!!!!!!!!!!!!!!!!!!!!" your ears rang as a terrible howling roar left Berserker's throat and before you could react a massive hand wrapped around your fist and slammed you into the ground, hard, you felt the ground buckle and crater beneath your body.