[Voice]
I don't know much about the other generations [and what she does know she's heard only second-hand through Ed], but apparently some time ago, there used to be some sort of monsters. Apparently they were raised by a person named Agatha and used to roam around at night. I guess those and a plague were the reason for the past generations dying...
Apparently the engineers who designed Sentience are here too, but I don't know much about them. [She remembers something about them sharing a body with some woman? But that's just kind of weird, isn't it? Sounds more like a rumor than a fact, so she doesn't mention it (yet).]