A / N: This is a version of another idea I did in the past, sharing content with newer ones that I've since scraped. The world this story takes place is a timeline removed from all the others and connected to them at the same time. Somewhat like Grand Order, it's essentially Fate/strange fake with Fate/apocrypha's rules and general framework though it borrows a bit from everything.
Prologue
Still in a daze, the king looked down at the weak, fragile body of the boy who'd been her Master, curled into a ball and muttering to himself, having exceeded the limit of what the mind could endure. All that remained of her former Master were those words he repeated over again and again and again. The same words she didn't wish to hear any longer. Her golden sword came down, severing his spine and ending his life. A mercy she had no right to carry out. Beside him, the one responsible for everything, sat wounded, clutching the wound that would've ended hers, as well, blood running down. The king raised her golden sword for the second time, but, as much as she wanted to, couldn't, and lowered it back down. She turned away to the large, ominous, and gaping crimson ringed portal in the sky above both their heads—the Holy Grail she so desired.
Nobody could blame her for it.
Only, she saw it for what it truly was now, and her heart was heavy with sorrow, deceived and blinded by her pride.
But, nobody could blame her for it.
There were no words.
—This path… I don't believe it's the wrong one—
Standing on this lonely battlefield, crimson shades pooling at her feet, this was the final outcome of her pride, her wish, and the devastation it wrought as she went from it to the slumbering city around them.
Yes, nobody could blame her for it.
—Oh, my dear little sister, how I await the day you crumble and fall and open those perfect eyes to truth—
Taking up her sword for the third time, the king left to go find a place to sow her sorrows.
Because nobody could blame her for it.