You know, there is another way .... We could begin with a speculation. Begin with the stargazer scene.
Old man: "All that happened long ago."
Child: "Will I ever get to the stars?"
Old Man: "Someday, child. Out there, there are billions of stars, and around those stars are billions of worlds."
Child: "Tell me another story about Shepard."
Old Man: "We've finished the book of stories about Shepard. Now it's off to bed with you. When you grow up, you'll have your own journeys to the stars."
The child runs off back to the village. An Asari maiden of about 40 walks out and meets the old man.
"There you are, father. Let me help you. Mother is quite worried."
"Thank you, dear. I'm quite tired."
Is it? or isn't it? Speculation.
You were the child (human).......... 25 Years Later ........ Your story begins.