Kinda got playful with this chapter, but there's still character development.

/ My POV \

"Grr... why is she always with him!" Chara hissed quietly. She was spying on Papyrus and Mettaton again. Somehow her brain remembered that they like to hang out here after they arrive at school. Sadly, Chara doesn't realize that she's actually being very creepy. "I wish she'd just disappear!" Her red eyes flared, and she walked away.
A new day of school had just started, and Chara already wanted to go home. She usually sees them hanging out all the time, and has a similar reaction. She would try to walk to class with Papyrus, but he'd go directly to where he chats with Mettaton, with the excuse of "I promised I'd meet her this morning, Chara!" However, Chara didn't believe that. It's clear to her that Mettaton has feelings for Papyrus. The way her cheeks instantly flush when she sees him, how she sways back and forth when they talk. Charas seen it all, and doesn't take it very kindly. Even so, she's not rude to the sassy, long-legged girl (Who likes to repeatedly say that she's a woman, not just a girl). In fact, Chara treats Mettaton the same way she treats everyone one else. She tries her best to respect those around her, but it's not always effective.

/ Chara's POV \

     "Heya sis! Let's go to homeroom together with Sans!" Frisk said excitedly after she saw me walk out from behind the corner. I tried to hide the hatred that was showing very clearly on my face.
"Well I could've gone with somebody else, but no. That stupid high heeled, too much makeup wearing, flamboyant-"
"CHARA!" Frisk yelled. Making me almost all over from shock. I positioned myself properly and face my annoyed sibling.
     "Sorry, let's go." And I zipped right past her and Sans, who looked as if he was going to faint. He's been acting strange all day! But who am I kidding, he's always been weird.

/ Frisk's POV \

     "Welp, Sans, I guess it's just you and me~" I said, sliding a finger up his neck and down his chin. He replied with a small shiver then looked over in the direction Chara ran off in. "Meh. Don't worry about her. She probably just upset because Mettaton and Papyrus hang out a lot in the morning around this ti-" I stopped myself, knowing how Sansy feels about Papy and Metta. He tilted his head in a with a raised eyebrow.
     "Fuahhh.... I didn't say anything! Let's just go, okay?" I took his incredibly cold hands into mine. "Whoa! I know that it's winter but..." Slowly, I lifted his hands up to my face and breathed hot air on them, closing my eyes in the process.
     "Uhh... Frisk? What're you...?" I put his hands to my chest and stared into his multicolored eyes.
     "Not so cold anymore, right?" I asked, giggling at his flustered state.
So adorable.

I was leading Sans to our homeroom class, his hands were finally warm at this point. Maybe he's actually relaxed...
Feeling a bit resistant for what I was about to ask, I stared at anything that could possibly be distracting. Sans usually brought up something I could relate to right about now, or even cranked out a pun or two, or a million. Sick of waiting, I stopped and glanced at him. Eyes separated into two flavor groups, but both on me.
     "So... about us-"

Listen, I know that I'm really bad with timing, but this is ridiculous.

     Papyrus and his (fancy, unnecessary, fashionista, and "WOMANLY") 'wannabe-girlfriend' walked... no. Papy, like a normal human being, walked. But Mettaton swayed down the hall like a drunk swan with a fractured wing. With completely non-judgmental eyes, I gave them both a polite smile. In which Papyrus returned a similar grin. I don't know what Metta was doing with her face, but it wasn't a smile.

What do you mean I hate on Mettaton too much?

I forgot about the conversation I'd planned for us and let go of Sans's hand, uncomfortable with the situation.

I wonder why.

/Sans's POV\

     The Frisk here is exactly the same, it's kind of scary. I want to say something, anything, but I'm too freaked out. And the weirdest part is that I don't know Papyrus's relationships with others. Chara seems to feel the same way that I remember, but Mettaton is a hundred times closer to him than before. I don't know if this bothers me or not. Frisk finally stopped walking when we reached a door decorated in snail art. It was squishy, and you could peel it off easily.

To be honest, I thought they might've been real.

     Frisk opened the door and we both stepped inside...

Somebody catch me.

     Everyone. And I mean everyone. I've ever truly known from the Underground was here.
     "Morning Frisk!" Undyne, welcomed. She looked pretty much the same. Red hair pulled up neatly in a ponytail, super visible abs, and that eyepatch she always wore.
     "G-g-good m-morning Frisk!" Stuttered who seemed to be Alphys. Short blond hair pushed back by a white headband, round glasses, and very pale skin, like she was stuck inside her l- house for weeks. Knowing her, that statement is probably true.
     Frisk gave them an awkward wince.
     "Morning you guys." Frisk pulled out some sort of cube wrapped in cherry plaid fabric and Alphys's face lit up.
"C-Chara made some t-this morning?" She asked. Frisk simply nodded and let Alph open it up.
I was distracted from the massacre of m- people coming over to Frisk when a woman who weirdly resembles Toriel sat down in a comfy looking chair at the front of the room. She looked exactly the same too! Besides the long and fluffy white hair that matched her (nonexistent) fur.
     "Alright my children, settle down and take your seats." Everyone shuffled away from Frisk and sat down in respective seats all around the room, the items on their desks matching their personality. Frisk let out a small sigh and sat down next to Papyrus. The only seat left was next to Chara, so I darted over there. She gave me a look so full of disrespect, I wonder if she hates me in this place too. I'm perfectly fine with that.
     "Y'know, that face is really cutting me down, why don't you chill'axe'?" I winked, and she cursed under her breath, making me chuckle quietly. Maybe this place isn't so bad...

     But I still want to go home. It just doesn't feel right and I don't even know what happened! I try not to think about what Chara said before we fought, even if it makes things easier to understand.

"I love your brother, more than ANYTHING... but I shouldn't. I'm just a monster, who actually thought she could be happy"

I tried shake the words out of my head, but they just kept coming back. How could she have possibly loved him? A crush maybe, but she's been okay with killing him for so long! I wouldn't even be surprised if she killed him after I passed. If I'm really gone, then why did I end up here?

ADMIN TIME!!!!

Tell Chara to stop being jelly... and peanut butter

It took a lot of willpower to make Papyton close to cannon (you'll see though, Papara is close to cannon too)

I WENT AND EDITED A PAPYRON PICTURE, INTO A PAPARA FANFIC! FIGHT ME.

I just have a hatred for Papyrus x Mettaton for some reason. But this chapter will be the last one I hate on her. I know she's meant to be a guy, chill out. But... my story, my rules.

Sans is a bit shaky and out of character, but that'll change. I mean, how you you feel if that happened to you? Yeah, I thought so.

Okay! I'll try and update soon, BAI! ヽ(⌐■_■)ノ♪♬