You and your partner, Frisk (you're using partner just because they have your soul) were just walking in this weird world (well, they were just walking and you were floating next to them) where monsters aren't in the underground and are on the surface. You've only seen monsters around and not any human. Suddenly, Frisk spots a purple lizard monster walking with a.. Human? They have a green sweater with a yellow stripe on... It's like yours! Anyways, your partner quickly runs to the angsty teen's leg and laches onto them (somehow unseen and you're a ghost so-).
The lizard girl spots Frisk and asks the human teen.
“Hey Kris, how do humans... Y'know.”
“Cellular division.” Kris replies in their cold tone.
“Well, that explains it.” She says and she puts her hands out of her pocket.
“Explains what, Susie?” They ask as they both stop. Susie points at your partner. The human looks down and freaks out.
“HOLY SHIT GET IT OFF!!” They shout as they try to shake Frisk off their leg while holding onto the lizard's jacket for support.