Frisk must have stayed with Toriel for about a month. She couldn't tell the time from underground, with no sun to measure. However, Toriel had enchanted a clock to always know the correct time, even if the clock never displayed it like a human clock. The numbers were all out of place and there were too many hands.

Soon, the human realised she had no clothes other than the ones she fell in, so the monster gave her some that she said had once belonged to her children. When Frisk asked her what happened to them, she turned rigid and refused to speak on the subject. She then retreated to her room for the rest of the day.

Towards the end of the first week, Frisk asked about what was downstairs. Again, Toriel froze, closed the oven door and turned to the human.

"My child, you should not go downstairs." Toriel's voice was no longer soft and gentle, but instead emotionless and cold. "You must promise me."

"Just tell me what's down there. It can't be that bad." Frisk responded, her voice slowly filling with anger. "I just want to know."

"Alright. Down there is the entrance to the rest of the Underground. We are only in a small part of it."

"Can I see it?"

Toriel took a deep breath, calmed herself and nodded stiffly. "The door is down there. You will not go through it. Please, for my sake." Toriel then held out a hand (paw?) to the human and she held it firmly. The monster guided the child down the stairs to the door. She knocked against it twice.

"You see, my child?" Toriel huffed. "There is no one there. There is no need to come down here ever again." The goat monster dragged the human away. Frisk looked back at it longingly and nearly made Toriel take her back when she heard a tap come from the door.

That night, after Toriel tucked the child into bed and retreated to her room as well, Frisk climbed out of bed, threw on a dressing gown and went downstairs to the door. She knocked against it gently.

A tap was returned.

Frisk gasped and tapped again. Another tap came back.

"Hello?" Frisk said, placing her hand on the door. "Who's there?"

"I could ask the same thing, kid." A voice came back. It startled Frisk so much she fell back from the door, the vines around her legs quivering. She absentmindedly scratched at her bandaged arms.

"My name is Frisk. I'm a human. I fell Underground about a week ago."

"My name's Sans. I'm a skeleton monster. I've lived Underground my entire life."

"Entire life? You've never seen the surface?"

"Never. But the underground ain't too bad. Besides, never seen what everyone is missing so why should I miss it myself?"

"I think I understand that." They stopped talking and sat in companionable silence. Frisk had turned so she sat with her back against the door. She didn't know what Sans was doing on the other side. He could have been facing the door, sitting like she was, or even gone by now.

"Frisk?" He asked. So, he wasn't gone then.

"Yeah?" She replied.

"Why did you fall Underground?" Frisk froze. She didn't even know anything about this guy, except his name, not even what he looked like, and yet he was asking her a question that reached deep into her and her darkest memories.

"I-I…It's difficult to explain." Frisk fumbled for the right way to tell her story to this stranger. "My…my family died when I was six years old."

Fire…everywhere…

"I was…at an orphanage for twelve years…The other kids there spread rumours that I started the fire…" She fumbled again. "And I did."

"What do you mean?"

"I was the one that pushed my brother to make my dad run to him and when he ran he dropped his cigarette and it stayed lit."

"Sounds to me like it wasn't your fault. More of your father's."

Frisk was open-mouthed in shock. How could he?! He didn't know the full story and yet he was blaming a man he hasn't even met! She was ready to storm away from the door and never walk down there again when he spoke again.

"I didn't mean any harm. I'm sorry." He trailed off and they sat in silence again. "Do you want to see the rest of the Underground?"

"Kinda, but Tori says I'm safe here and that I shouldn't leave."

"The Underground's not that bad kid. The monsters here never hurt the humans that have fallen before. Agreed, they don't survive, but a monster never kills them. They always die because of the conditions of the Underground."

"Oh? Really?"

"Yeah. Bravery and Integrity died in the heat of Hotland, Kindness and Justice drowned in Waterfall and Patience and Perseverance froze in Snowdin, where I am now. No monster would ever hurt a human."

"Still, I can't leave Toriel. She lost her two children years ago, I won't let her lose another again."

"You're a better person than me, kid. I left my dad as soon as I could to live a life by myself."

"Yeah, well, you grew up with your dad. I didn't."

"Right. Sorry. Again, didn't mean any harm."

They sat in silence once more. Frisk tapped once on the door, announced she was going back to bed, Sans tapped back, said goodnight and Frisk heard the crunch of snow. She went back upstairs, making sure to make no noise in case she woke Toriel, and fell back to sleep again.

A/N I can't believe i managed to write this so quick!

Anyway, please review, favourite and follow me and the story. And remember!

Stay sweet! and stay DETERMINED!