[Crossover] The Witness

Blurb One She witnessed the rise, glory, and downfall of heroes, divine kings, and knights whose names would be remembered for all time. But no one remembers. Not even she herself. Blurb Two After Jun Ming Weilai became a Heroic Spirit on Alaya's side, she slacked off terribly and never answered a single summon. Until one day, on a whim, she accepted an assignment from her superior. When she manifested in the Ruler class, she discovered seven sets of memories from different worlds had appeared in her mind. The protagonists she had such extraordinary ties to in those memories happened to be the Servants summoned for this Holy Grail War, the one responsible for the world's destruction. They were watching the scene where she was summoned. Then she heard the mage's command: "By the Command Spell, I order you: kill the Ruler." Jun Ming Weilai: MMP, you lousy mage!