Disclaimer: I don't own Undertale. All credits go to Toby Fox. the only thing I own is my OC :)

A/N: another chapter! I've been busy trying to move & write, which is bothersome. Lack of sleep isn't helping either, but I'm hoping to get this story done (although I doubt it's going to finish soon). Feel free to ask any questions and if you spot a typo or punctuation mistake, please let me know!

Chapter 2: Unexpected Turn

Frisk ran back to the Surface, her breath billowing like a cloud in the cold winter air. For some reason, she felt like she knew the person. The figure's voice, the familiar violet glow… it made her wanting to cry. Feeling her eyes burn, Frisk wiped her eyes roughly as she kept on running when-

"woah, kid. what's making you run like this?" Sans was lifting you up with his magic, his blue jacket and black basketball shorts on like always. Frisk looked down to meet the white pinpoints in his eyesockets, trying to catch her breath when-

"kid, did you cry?" his piercing stare meant that there was no lying. Frisk opened her mouth to answer no, but closed quickly to nod.

"and allow me to ask why the hell-" oh no, Sans' voice was getting dangerously low. That meant bad. "-are there bloodstains on your shoes?"

Crap. Frisk craned her neck to see her light grey sneakers stained with crimson. She gave a nervous laugh as Sans regarded her with his cold gaze. She squirmed mid-air and opened her mouth slightly to close it back and signed to him.

[Um, put me down… please?] The ice blue glow died as he gently put her down. She grinned good-naturedly and gulped as his piercing look met her eyes again.

Knowing that she won't be able to lie to the skeleton, Frisk explained what has happened. The hooded figure with amethyst orbs. An hourglass charm that glowed blue when she disappeared. That she was trying to approach Flowey, but excluding the parts where she had talked her. Sans' eyes widened.

"you met the girl?"

[You know her?] Frisk signed to him and he nodded.

"not personally, but i've seen her around." She decided not to poke more than that after looking at his expression. Silence passed. And then the sharp ring on her phone scared the life out of her.

"Mum?" Toriel's pleasant voice was heard from the other side and Frisk smiled gently. Frisk could hear the gentle music in that background that her mum would play in home. She could also hear the hesitancy in her voice as Toriel tried to say something.

"Frisk, would you be kind to go grocery shopping? I realised we're missing some of the ingredients." Her mum sounded apologetic; and Frisk gave a gentle laugh. Was she feeling bad just for asking that? With a soft smile etched on her lips, Frisk nodded into the phone.

"Yeah, sure. Text me the list, okay?" Sans' piercing white glow followed Frisk's cell as she pocketed it. Frisk mumbled as she cringed away from his glare.

"I need to go grocery shopping."

"ok." Short silence followed and Sans opened his mouth again.

"kid, you wanna talk after that?" Frisk couldn't say no. Especially when she knew that Sans was not the one to take no with the expression he had on his face. She nodded. He held out his arm to her, opening his mouth.

"let's take the shortcut, shall we?"

The dark hood lowered and feeling the cold breeze on her pale cheeks, the girl swung her legs like a kid as she sat on the tall branch of the tree. The girl's amethyst hues followed the skeleton and a young girl beside him, holding grocery bags in their hands. The familiarity of the skeleton made her heart sink, remembering how she should be operating.

Never meet them in person. Help them with little hints, but never ever, appear in front of them. You're invisible.

So much for that promise. She'd been seen by the two people that she should be most careful of. Burying her face into her cold hands, the girl sighed deeply.

What has she gotten herself into?

Would she be able to make any difference? She wondered, thinking of the words the monster had told her before she left.

'the smallest thing can bring chaos when it's to do with time.'

The small sorrowful smile that he gave. How his eyes were betraying him and revealing his darkest thoughts, emotions. How he patted her before-

No. It's not time to think about what happened.

She felt her throat constrict, feeling the hot tears building up in her eyes as she observed Sans, barely breathing. Opening her mouth, she breathed,

"Sans, tell me… What is the key to bring happiness for you?"

She observed Sans as he looked into Frisk's eyes with dark expression.

"you need to promise me that you won't talk to that girl, or approach her in any way." Sans' stern voice made Frisk gulp. What could possibly make a skeleton strong as him to warn about somebody that he barely knows?

"if that- that girl, that thing…" great, she wasn't even a human anymore.

"nothing good can come by talking to that flower. you know that." His voice was surprisingly gentle. Frisk nodded slowly. The girl sighed as she watched the sunset.

And then somebody screamed.

"Sans!" Frisk's action was immediately stopped by Sans. Group of humans were ganging up on a female monster. She was definitely the vulnerable looking one, and Frisk whipped her eyes from the gang to Sans, quickly whispering. Her chocolate eyes filled with compassion. Kindness.

No wonder the skeleton fell for the human.

"You can't leave her there, she'll-"

"leave it." Frisk looked horrified at his words. The figure smiled bitterly.

"But-"

"if i beat them up, it means that they'll find a way to bring that upon us. use it as a weapon to the monsters." His logic was straightforward.

Cruel.

Harsh.

Just like the time when she talked to him.

The girl bit her lips as she contemplated about the possible consequences that she might have to face. Gently touching the glowing hourglass charm with her fingertip, she jumped off from the tree. Holding on to the hood to cover her face.

"SANS!" She definitely heard the astonished exhale of the girl. She also noticed the blue glow in the skeleton's left eye.

Shit. This was bad.

"I don't have any gold, please-"

"Nah, it's not that, old lady." Of course. They just enjoyed the fact that they could pick on an innocent monster. The girl clucked her tongue as she headbutted into the man who seemed to be the leader.

"What the-"

"I'm sorry, but she's my mum." She commented as she put an arm around the petite fluffy monster. The gang regarded her with interest. The monster looked at the girl but didn't dare to open her mouth.

"You're a human."

"What about it?" she could feel the cold gaze on the back of her head. That was Sans. In front of her, the gang were looking at her like a predator on hunt. Shit. Bad.

"You dare-"

"You know, it's pretty gross when you flex like that." She cut the boy's words. His face flushed in embarrassment. Grinding his teeth, the boy took a swipe at the girl. Swiftly, she moved back with the monster. Sans' white orbs narrowed as he watched the girl move.

"impossible." Frisk stared into Sans' eyes. Something was definitely off with him.

"You know; it'd be really helpful if you could help me get this lady out of harm." Cold wind swept through Sans and Frisk. Both flinched in surprise as they whipped their heads around to see where the girl was.

But she was in the same spot.

Sans never felt this uneasy. Squeezing Frisk's shoulder slightly, he told her stay away, his eyes glowing blue. Frisk stepped back as she felt the tingle of electricity in the air. She swore that the amethyst orbs curved into crescent as the hooded figure regarded the two of them.

"I usually don't touch girls, but you know, I think you need a lesson." Buttface (the girl decided to name the 'supposed' leader of the group) popped his neck as he cracked his knuckles. The fluffy monster lady whimpered pitifully as she cowered away from the idiots, staying close to the girl as possible.

"How about we settle this… human vs. human?" Lifting her hands to show that she clearly doesn't want to fight, the girl nudged the monster lady.

"Run as fast as you can to the skeleton over there." There were only three bulky idiots, but having to protect somebody was going to be difficult. The fearful eyes of the fluffy lady tore from the now violet orbs and focused on the skeleton. Sans nodded to her as she broke off running. The boys tried to catch her, but the girl put her legs out in front of them, tripping all three at once.

"woah, lady. just go stay with the kid over there, will ya?" Sans muttered as he lifted the monster lady with his power, frowning as she yelped and flailed around mid-air. His single white pupil dilated as the group of thugs struggled to get up.

"Can we please, resolve this by talking?" The girl murmured as she twirled her hourglass charm with her fingers. The boys growled as they stood up. Taking another swipe at the girl, the buttface grinned cruelly.

"Sorry, you just humiliated us in front of everybody and I don't think I can let that go."

"Figures." Shrugging, the girl clicked her tongue. Ducking as they started to aim for her, the girl jumped away from the gang. Her hood came off and Sans saw the mischief dancing in her dark violet orbs. And then he heard the unmistakable loud voice.

"Hey punk! What brought you here?"

[Undyne, you need to help! Those people over there-] Frisk was frantically pointing at the gang and Undyne's eye narrowed in disapproval.

"Idiots fighting. What does that-"

[The girl saved the lady here and] The magical spear had already materialised and left the hot-headed heroine's hand even before Frisk's sentence finished. Despite Frisk's utterly horrified expression, the spear didn't harm the bulky gang. Sans' eyes widened as he absorbed what had exactly happened.

The girl had thrown herself between the spear and the gangs.

Out of the list of things that she was planning to do, getting impaled by a magical spear like a fishstick, was definitely not on it. But somehow, she found herself in that situation.

She felt the magical spear impale her. She also felt the spear disappear into thin air as she was left gasping. The pain was, literally, breathtaking. Did she regret pushing the gangs away from the spear?

Truthfully, yes. It hurt like a bitch. But the shit-eating grin on the skeleton's face was now gone, replaced with… confusion?

The gangs looked at her, horrified, as she coughed blood onto the grass. She managed to gasp,

"Watcha looking at? Scram." The bulky idiots scrambled to leave as she put lifted her hood up to sink back into the shadows. Clutching at her hourglass charm desperately, the girl tried to walk away when she was lifted into the air. She felt her body convulse once more with a violent cough.

"Sans, you're hurting her!" Frisk's yell echoed as the girl's eyes closed slowly, head spinning. The last thing she remembered was the blue glow that seemed to dim.

"Aria, baby princess." Melodic voice was murmuring into her head.

The dream was hazy. The girl found herself back to the time when she was young. So young that she could barely understand what was going on. She was scared when she was met with silver white irises that glowed. The black sclera surrounding its' pupils, how his left eye lighted up in cyan and yellow… even she realised that the man wasn't normal.

But mama told her to be nice to him. Her hazel hair and dark chocolate eyes made Aria feel warm. She liked her mama. Mama would sign to her and she tried so hard to mimic the small movements of her hands. Earning gentle laughs that would make her feel sleepy.

Mama would leave the house often. The man – mama's bestfriend, looked after her when mama had to go work. Whenever Aria tried to mimic mama by wriggling her fingers, flexing them in a similar manner as her mama moved them, his sharp eyes softened.

Soon enough, she realised that the man was nice. Not because he was mama's bestfriend, but he talked to her in a manner that no adults would talk to her. Tapping the tip of her nose as she sneezed. Faking to be hurt when she poked his side with her tiny hands.

Taking her away when bad things happened. Like the time when she figured out that her mama wasn't her real mama.

She didn't mean to listen. But when she had a nightmare about a yellow flower that wouldn't stop laughing, the girl found herself carrying a skeleton plushie to her mama office.

Mama was crying. With a photograph on her hand, mama was sobbing, mumbling. Promising to raise her well.

"Aria is a good girl, just like you." She was five when she heard that. She was about to ask about what mama was talking when a cold hand covered her eyes.

"shh, girl, mama needs some time alone." When his big hand wasn't covering her face, Aria tried to murmur something. But his expression…

It was indescribable. Endless hollowness. The playful twinkle gone from his eyes. The dim light in her room shading his left eye. Glowing painfully dim blue. And really, the five-year-old babyself was patting the man's head. Her small hands on his cheeks. Mumbling something about not crying. And then the man had his face burying on her head, the warm liquid tickling her hair as she continued to pat the man without knowing why she was doing that. But she called his name, and he called her name back, gently and ever so sadly that she would never forget.

A/N: some people might have a vague idea of what's going on now, but hopefully they don't because I like surprises. I like complicating things because I'm a mean, mean writer. Well, time to stuff more things in boxes for moving. Next time!

-HelloSkye-