OH NO SHE HAS TO EXPLAIN. Despite all the time she'd spent here, it was not nearly enough to keep her from blushing furiously at the question, glancing off to the side. Hopefully he was fine with this sort of thing, and not a virgin like she'd been.

"W-well, as they'd explain to you... um, so apparently in this world, at least, there's a source of life energy called eros." He might know enough to know what she's working towards. "This world was on the brink of death, and they need a lot of it." Her blush fading, she got more comfortable as she hit a rhythm. Still, the final detail needed to be dropped.

"...but it's released by... sexual activity... and they didn't have anyone left to do that here. So they've been... somehow bringing people from other worlds to this one, to... do that."