I Will Become a Grand Order

I transmigrated as Cecilia, but don't get the wrong idea. She's not the Cecilia you're thinking of! Aside from getting a System from the start, my golden finger also gave me a Heroic Spirit template. And the class is Archer?

What's going on? Am I about to start down the path of being an overpowered cheat first thing in the morning?

Anyway, this is the story of someone named Cecilia who travels through various worlds, acquires Noble Phantasms along the way, and eventually becomes a Grand Servant.