"So... We got a new friend." said Chara, appearing out of thin air, floating in the air at Frisk's side. "Finally! I was waiting for another one to come. You're the only real person I've been around in a long time."
Chara was a thirteen year old girl only Frisk could see. When Frisk fell, she woke Chara from the dead, because her determination was so strong. She was her guide, though not a very good one at times. She led her through the Underground as she made her way to the surface (who knows what would've happened to her if Frisk had somehow made it out?) because she had lived there once.
She was the first human to fall. The king's son, Asriel, found her and his family adopted her. She lived with them for a few years until she couldn't bear to see them trapped anymore. They conjured up a plan to escape, but their plan failed. She and Asriel had died, and she was buried on the buttercup bed where all humans fell.
"Oh! I haven't seen you in a while. Where've you been?" asked Frisk.
"Eh, you know me, always sleepin'. Got nothin' else to do if I'm not really here, have I?" Chara spoke, flying above Frisk's head.
"Why don't you appear much anymore?" Frisk questioned.
"Well, if I like to sleep for days on end, I'd rather not have you waking me up when you want to talk to someone of your own species." Chara replied.
"Well, sleep less, please. I kinda feel alienated sometimes." Frisk frowned.
"When did you wake up?"
"When you were taking her to our house." Chara pointed at Kirsty and Sans. "I'm kinda annoyed that she's stolen my bed, actually."
"You're a ghost. You can just sleep in the air like you always do." Frisk giggled.
"And you think I like not being able to feel alive?"
"Fair point." shrugged the child. "What do you think of having more humans around? I can't wait for other more to join us! We'll expand the whole thing, and have humans living all over the place! Humans and monsters, living together in peace again!" Frisk beamed.
Chara turned around and looked at the two behind them.
"... Don't you think she's a bit weird?" Chara asked.
"Um... Chara, you think everyone's weird." said Frisk, shaking her head.
"No, she's a different weird..."
The undead girl floated towards Kirsty, stopping a few steps away, as a force that wanted to keep her and Frisk stuck together halted her in her tracks almost a kilometre away from her 'owner' and gradually dragging her back, like a dog on an extremely long leash. She squinted her chocolate brown eyes, staring at the older girl.
If she concentrated hard enough, she was able to see certain things about people - their Hit Points, Attack, Defence, weapons and armour - and could also see a faintly glowing soul. However, whenever she looked down at herself, no matter how hard she tried, she saw no soul at all. For example, she could see that Kirsty's Attack and Defence levels were unusually high for someone who seemed so harmless.
"I've been watching her, and...she's...not like us...or the monsters." Chara declared, causing Frisk to raise an eyebrow at her statement. "I've seen awkwardly quiet monsters, but none of them have really been just as strange as her, that Kirsty girl."
"Oh, Chara, you're probably just acting like this 'cause you haven't seen humans in a long time and you're only used to seeing how monsters are like, just like how you acted when you first saw me. You thought I was really weird, didn't you?" Frisk suggested.
"But you are!" cried Chara.
"Hahaha!" laughed Frisk. "You're the only weirdo around here, my imaginary friend!"
"Ugh!" Chara moaned, rolling her eyes. "You don't get it though... Her soul's purple, but...she doesn't look very persistent to me... I think she might be hiding something."
"Chara, look, Kirsty is just like us: a perfectly normal human being...or at least I think she is." Frisk said, pulling her companion along with her as she tugged at the large, heavy door.
Chara sighed, letting her brown boots soundlessly touch the snow, as she started to walk back to Frisk. "... Heh... Yeah... You keep tellin' yourself that..."
"Are you...enjoying it here?" asked Sans, at a loss for words yet again.
"Uh... Yeah. It's...nicer than I'd imagined it to be." Kirsty replied.
"Is it...better than the surface?"
"... Well... I think they're equally amazing. Down here, it's really pretty and all the people are friendly; on the surface, the views are incredible. The people there...are...a bit...um..." Kirsty paused, fiddling withe zip of her coat with her left hand and staring anxiously at the snow crunching beneath their feet. "Just... Never mind. They're nice too."
"Hey! Sans! Kirsty! You coming or what?" called Frisk, waving for them to quicken the pace.
"Sorry, kid. Some of us people like to take it 'snowly' here. Heh." Sans chuckled, winking at the humans. He was happy to see that he put a smile on Kirsty's shy face and caused Frisk to let out a small giggle.
"Yeah, chill, Frisk." Kirsty said. "When did anyone say we had to be so nippy about it? Definitely not me."
"Wow! Haha! Look at you two...!" Frisk answered. "But, seriously, can we get going now, guys? This door is super heavy, and my tiny arms can hold something that weighs this much no longer!"
"Oh, use your determination!" laughed Kirsty, taking Sans' arm as she began to race towards her best friend. "Hehe!"