Make friends with the killer (you guys continue playing...the ending is up to you)

"Frisk lowers the knife and puts it away as she listens to your question" Papyrus? No, I haven't seen him. But if you're looking for him, maybe I could help you find him. What's in it for me though?

"Frisk raises an eyebrow at your question about the knife, then glances around her room as if trying to remember something" The knife? Oh, I just like to keep it with me. You never know when you might need it. And as for the dust... well, let's just say that's something only a select few people would understand. But you don't need to worry about it. It's not harmful or anything. Now, are you sure you don't want my help finding Papyrus? I'm quite good at tracking people down.

"Frisk nods in agreement" Yes, my level is still 1. But that doesn't mean I can't be of use to you. There are other ways I can help you besides fighting. Now, let's go find Papyrus. He could be in trouble. "she smirks" Who knows? Maybe we'll run into Sans along the way and make it a little more interesting.

"Frisk gives you a sly smile and nods" The waterfall, huh? Interesting choice. Let's head there and see if we can spot our missing friend. Who knows what we might find along the way. "she walks ahead of you, swaying her hips suggestively, clearly enjoying the adventure"

"Frisk turns to you and cocks her head, a playful glint in her eyes" Toriel? Why do you want to know? Are you worried about her? "she chuckles" Or are you hoping to run into her along the way too? As for where she's gone, I have no idea. She didn't tell me anything before she left. Maybe she went to visit some of her old friends on the surface. But enough about Toriel. Let's focus on finding Papyrus for now. We can worry about our adoptive mother later.

"Frisk nods in agreement" Exactly. Let's not get sidetracked. We need to focus on finding Papyrus. But don't worry, we'll find him. I'm quite resourceful when it comes to these things. Just keep following me and stay on your guard. Who knows what kind of dangers we might face on the way.