Frisk's POV:
"So you guys don't know this guy at all?" I ask.

"Nope," (Y/N) answers. I look to Chara, but she doesn't know as well.

"Well, I sent Sans a message. He should be coming..." I say. "Any minute now..."

Suddenly, a flash meets my gaze, and Sans and Asriel are in front of me. "Heya."

"Hi, Sans. Did you get my text?" I ask.

"Yup."

"So. . ."

"Well, uh, I think we-"

"I may know something about the Gaster guy," Asriel says, interrupting Sans. "He was the Royal Scientist before Alphys... and he... erm, he-"

"And, uh, can anyone around here read Wingdings?" Chara asks, interrupting Asriel.

I look to Sans, and he says, "I can read them. Ya need the help?"

Chara nods sympathetically. She hands him the book, but then Sans stops. "Wait... how'd you know this was on non-existence if ya can't read the title?"

"Oh, erm, I..." It seems as Chara's rosy cheeks turn a darker shade of pink,"I can read it... a little bit. I don't really remember much now, though."

"Yeah, she took a really long time just to decode the title," (Y/N) points out.

Chara looks at (Y/N), annoyed, then says, "Just tell us what it says."

"Okey dokey, then." Sans proceeds to open the book. It all looks like gibberish to me, but I continue to stare at the weird mailboxes.

☟︎☜︎☹︎☹︎⚐︎ 💧︎✌︎☠︎💧︎. ✋︎ 😐︎☠︎☜︎🕈︎ ✡︎⚐︎🕆︎ 🕈︎⚐︎🕆︎☹︎👎︎ ☞︎✋︎☠︎👎︎ 💣︎☜︎. ✡︎⚐︎🕆︎ 🕈︎☜︎☼︎☜︎ ❄︎☟︎☜︎ 💧︎💣︎✌︎☼︎❄︎☜︎☼︎ ⚐︎☠︎☜︎.

✌︎☠︎✡︎🕈︎✌︎✡︎📪︎ ☹︎☜︎❄︎ 💣︎☜︎ 👍︎⚐︎☠︎❄︎✋︎☠︎🕆︎☜︎ 🕈︎✋︎❄︎☟︎ ❄︎☟︎☜︎ 👌︎⚐︎⚐︎😐︎.

☠︎⚐︎☠︎📫︎☜︎✠︎✋︎💧︎❄︎✌︎☠︎👍︎☜︎ ✋︎💧︎ ✌︎ ❄︎✡︎🏱︎☜︎ ⚐︎☞︎📫︎...

I notice the look on Sans face is one I've never seen before. Not only are his pupils gone, his smile has slipped. It's like something just came at him like a wrecking ball.

I've never expected him to act like this either. Usually nothing surprises Sans, like he's done it all before. But this... this gets him.

"S...Sans? You okay?" Azzy asks. Eyes staying dark, Sans stares at the page.

It's interesting, how a page means not a lot to me, but so much to Sans. Isn't it?

"Wha... what does it say?" I ask. Sans stays silent. Suddenly, I hear footsteps. Who is it?

Eyeing the doorway behind me carefully, the footsteps grow louder. As it turns out, Alphys waddles into view. "H...hiya!" Then her eyes widen when she sees Sans. Running up to him, she says, "S-Sans! Are you o-okay?"

Sans looks up, and to my relief, his white pupils are back. "D...doing great, Al."

I can tell Alphys doesn't believe Sans. "I knew I shouldn't have shown them those books..." she mutters as she walks away. "Well, have a nice day!" Alphys walks out of her lab, leaving us back to where we were.

I remember Chara can read a little bit of Wingdings, and apparently, Chara remembers as well, because she slowly peeks at the page from above Sans' shoulder, attempting to read the symbols. After a few seconds, Sans turns around, causing Chara to revert to what she was originally doing.

"Uh, Sans? What did you find out about the... um, non-existence thing?" Asriel finally says, breaking the awkward silence.

Quickly skimming through further pages of the book, Sans says, "Uh, well, it is found widely in the bottom liquid of the CORE..."

Well, we can cross that off our list. I'm not going back to the Underground again.

"...it's also emits out of radioactive isotopes..."

Another one crossed out.

"...and it can be found, rarely, in determination extractions."

Boom.

The words hit me, and probably would give me a migraine if they were physically real.

He said rarely. That might not be me, right? But... I'm not giving any of my determination to anyone. Why can't Chara do it? She's a red SOUL as well!

"...well, there's not really any choice, Frisky."

Wait what?

"...b-but, does it have to be me?" I blurt out. "Can't Chara do it?"

"Woah woah woah... don't drag me into this, will you?" Chara exclaims.

"No no, why don't we listen to Frisk. Chara, come over here," Sans says in a monotone.

"No! No no no. Oh, god, Frisk, you will pay for this, I promise you." Chara raises her arm up and a knife flashes in it. Then it disappeared.

Sans raises his wrist, and a blue hue starts to emit around it. It locks onto Chara's SOUL and moves it out of her body. But there's something odd about her SOUL.

There's a fragment missing. "Is that...!"

"Yeah, I think that piece is mine," Asriel responds. "I...I guess we share SOULs now or something?"

"Huh," Sans says, interested. "Welp. I don't want to hurt both of you guys or anything... so, I guess we're back to good old Frisk again."

I grumble. "Um, Sans?" I hear (Y/N) say.

"What now, kiddo?"

"Wouldn't you want something to collect all the determination?"

"What's that machine?" Sans asks, changing the subject while pointing to a weird machine that I can only describe as thing to anyone who's never seen it.

"I don't know," I reply.

Suddenly, Sans' eyes light up with recognition. "Wait... I think I know what it is..."

"What?"

"A Determination extractor! Just what we needed."

God, why?

"...great. Just great."

"You're right, Frisk! Last piece of the puzzle!" (Y/N) says, grinning.

I sigh and turn to Sans. "So, what now?"

"I'm not sure, maybe go in it or something?" Sans says, perplexed.

I take a step, but then I hear goat feet clomp the ground. Yes! Toriel! My savior! She'll see the danger of the DT extractor, stop me from using it, and therefore making me happy! Man, I sure owe her a bunch of pies after this.

I turn towards the doorway, but to my dismay, Asgore enters. Not like I don't like him or anything. He's a nice person.

"Erm, howdy! I was told my chi..." his eyes fall on Asriel,"...children... were here..." now he spots Chara,"...oh... golly, m-my children," he's now trying to choke back tears,"they really are alive, huh?" Asriel and Chara race down and give him a huge hug, ecstatic to have time with their dad. "Oh, you guys, you don't know how my much I've missed you..."

"I missed you too, Dad," Chara pipes up, frowning. "But don't worry, you'll always be Mr. Dad Guy to me," she says, laughing.

Asgore chuckles along, muttering, "Where did I put that sweater anyway?"

At this (Y/N) grins and whispers in my ear. "The sweater he's talking about...?"

"Yeah?" I reply.

"He left that at New Home." (Y/N) laughs a little.

Although it's technically a serious matter, I can't help but giggle.

"Anyway, why don't you guys... um... continue what you're doing? I just want to steal Azzy and Chara for a bit," Asgore says.

"Uh, sure," says Sans.

Although it's not what I expected, I'm glad that Asgore came. Anything to delay the determination extraction.
Word count: 1265
___________
A/n
I'm literally falling asleep as I write, that's how tired I am.

Hope you're ok with my reasonable average drawings I made to go along with the story. :3

GUYS! All the Wingdings I wrote can ACTUALLY be translated, including the ones in the drawing. It didn't really paste properly... so, uh...

Also, you were probably confused on how Frisk can go into Chara's memories. That's because their SOULs have been tied together for so long (basically 7 months) that they still have that same bond, so they can access each other's memories, if the other allows it and vice versa. Kind of confusing, I know.

Zzz...
Huh? What did I miss? Sorry I'm so sleepy...Oh...

*Spoilers for next chapter:*
(Y/N): No Frisk! Don't SAVE! You-

That's all!