XxEMIYAxX
Sakura rang the doorbell anxiously. Yesterday she had seen a familiarly-shaped bruise on Senpai's hand, and she had been worried as to whether or not Senpai was a Master. But now, nobody was answering her. It was then that she heard a scream. She panicked. "S-senpai, I'm going in!!!" Quickly using the spare key she had, she opened the door to the household and rushed over to the house.
Archer buried his swords on Emiya Shirou's chest. 'Drown in your ideals and die, Emiya Shirou.' After his other self had summoned him, he had quickly tried to finish him off but was interrupted by Tohsaka and Saber. He had had no choice but to wait until they were gone. As Shirou had been cooking, Archer had quickly surprised him, cutting his hand which held the Command Spells. Thanks to his independent action, he'd have enough time to kill the boy. As the boy let out a yell of pain, he heard a panicked feminine voice as the door to the Emiya Household opened. Archer stopped driving Kanshou and Bakuya through the boy's chest. Who was it now--- 'Oh... Shit.' He had been so drunk in the desire to kill the boy, that he had forgotten about her underclassman. 'If Sakura sees this, she'll get very sad...!'
But it was too late. His former underclassman stared at the fatally wounded form of Emiya Shirou as he clutched the blades digging into his heart and organs, as he went limp in front of her eyes. Sakura stared at the blades, then followed the hands of the one wielding them, to emotionlessly stare at the face of Archer.
Archer stared in shock at her. Sure, he had wanted to kill his other self, but not in front of her! 'It seems that my memory wasn't as sharp as I would've wanted it to be...' Now, he had expected many reactions from Sakura. What he hadn't expected was that the entire room was suddenly filled with a dark aura.
"Senpai...?" Sakura looked from the face of Archer to the limp body of Shirou, then to his killer. His killer. His killer. His killer. His killer. His killer. His killer. His killer. His killer. His killer. His killer. His killer. His killer. HIS KILLER.
"Why... Why did you kill Senpai?" Archer flinched, as he quickly stood on edge, as from the darkness of the room, shadowy tendrils emerged. "Why? Why? Why!?" Archer stood frozen as he saw red, blood-like ink crawl up Sakura's neck. Archer quickly blurted. "Sakura, wai-!"
"DIE!"
But he was pierced by thousands of dark tendrils which quickly sapped him of his remaining life force.
-------
Case Conclusion:
TOTAL. FAILURE.
(You're free to post Servants from FSN, FZ, Extra, HA, or even characters which aren't even Servants to be summoned as ones by whoever you want.)