In the past
Her hand was trembling as she stepped forward to drive the knife deeper. The blade sunk deeper into the older woman's back as Olga had her fist turn bright white. She was breathing hard, the numbness the drugs gave her being of nose use in the face of the stress she faced.
The knife drew blood and reached a vital organs within Kiara Sessyoin's body and caused internal damages within. Olga grit her teeth and twisted the blade before pulling it out. Kiara gasped and fell down her knees as blood flowed through her wounds. Her eyes betrayed no hint of shock or anger, merely pity as she stared at the bloodied girl behind her holding a long knife in her hand.
Olga looked down on the fallen Psychiatrist and held her knife tighter. She had been... Waiting for this moment. A lapse in Kiara's defenses, that was all she needed. Her entire time being drugged and made to follow Kiara's orders all led to this moment. At last, she would kill another Master.
"So you finally did..." Kiara murmured as she looked at the girl before her, "Cleverly planned too. This was the only time Archer isn't with me... I had made sure to give you a stronger dose of your medication but it would seem... They didn't have any effect on you."
"I broke them down. In what time I had when I was lucid, I broke them down. Reversed their effects and made counters. To restore myself. Three weeks of this hell, is finally over," Olga declared as she stepped towards the other woman, "What a stroke of luck that you sent Archer away. What a stroke of luck that you didn't tighten your security. What... A stroke of luck... Not unless you accounted for this."
Kiara smiled as she held her wound and said, "No. I merely became too complacent. When the world is on the cusp of being saved, I lose sight of my self."
"Spare me," Olga spat as she held her knife, "You were just stupid."
"Perhaps. And because of it I paid the price," Kiara said as she sighed. She then met the girl's gaze, "But truly, I did want to save you. Your poor soul which was so hurt, broken and defiled."
"Your methods robbed me of my will. You robbed me of my initiative, puppeted me to amuse you and even took my servant away. I may as well have been your slave. Not anymore," Olga snarled as she kicked Kiara down on the ground and mounted her, "Three weeks."
"Ah... But by killing me, you will be saved. Once you are... Perhaps you will have that push you need. The push to face that girl again," Kiara said as she caressed, "Olga's face, I may die, but you will be saved. If this grants you peace, my disciple... Then cast aside your humanity and kill me, Master of Assassin."
The knife thrust and found Kiara Sessyoin's heart. Olga drove the blade deep before the hand touching her face fell limp.
"Mages have no need for humanity in the face of their goals," Olga whispered as she wrenched the knife out. She raised it again and chopped off Kiara's hand, bringing the Command Seal the older woman had remaining close to her face, "By the power of this Command Seal, Archer... Use your Noble Phantasm to kill everyone within your vicinity."
The seals shined red as Olga's lips curled into a smile. She dropped the disembodied hand and stepped over the corpse of Archer's Master.
"I'll make good use of the prana you have gathered, Kiara... No, Guru. I'll show the world what sort of salvation you had in mind for them," Olga whispered as she looked out the window and held her hand to the skies, "Let the Stars fall..."
.....
One hour later the ritual began.
.....
Two hours later stars began to vanish from the sky one by one...
.....
Three hours later Brie woke up in the cabin...