Ms. Teach (Sans x Reader)

(Y/n's POV)
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"so, you ready for the results in the test?" Sans asked me

"Yep!" I said

"and, we're off!" Sans held my hands and-

"hey, why don't you teleport? you stopped me from teleporting yesterday, right?" Sans said

"Sigh, alright. And boom!" Both of us jumped and teleported to another place. Hotlands!

We were walking to the same lab I and Frisk stumbled up upon. I sure hope Frisk wasn't hurt. And to my surprise, Frisk was standing meters by the lab door, waiting for us.

"Hey, sissy! And oh, hey Sans!" Frisk waved. I waved back and entered the lab.

"Oh? Where's Alphys? Is she busy?" I asked.

"Yup! Busy watching Anime with Undyne and Papyrus!" She replied, but when she mentioned Papyrus... wait, she brought all of us here? We both entered the lab, to see three figures watching at a TV screen.

"Huh? Heya punks!" Undyne turned and greeted us.

"Hi! And, ooh, are you two...?" I looked at them, Undyne and Alphys sitting together. Yes!! Both of them are cute together

"Umm, y-yes!" Alphys answered for us, blushing at Undyne. 

"And it was all thanks to your sister, Frisky!" Frisk waved.

"You did a great job, Frisky!" I said, clapping my hands

"And... congratulations to your relationship, you two are cute together!" I said, and Undyne grinned.

"And, what about you, Sans? Did you complete your dare?" Undyne asked Sans

"heh, yup." Sans said

"Well, who'd you ask?!" Undyne asked him again, and all are excited to the fact that we're now dating after more than a few months passed.

I then felt an arm grip my side, and go close to me. I blushed in embarrassment as Sans revealed that we're a thing now. And I said, "Hehe, yay!"

"Hah! I KNEW it!" Undyne shouts. The four of them has stars on their eyes.

"Yes!! OTP! This is the best day of our lives!!" Alphys squealed.

"So, when's the date?" Frisk asked

"By Friday this week." I answered

"Yes! Perfect, all part of the plan!" Frisk yelled, but both of us were confused to where she said the last four words.

"Um, Frisk? What do you mean, 'Part of the plan' you were saying? Were you, planning something?" I asked

"eh, I think i know what the kid's up to. c'mon, kid, let's talk it out." Sans said, and he and Frisk went to another room to have a personal talk.

"So, w-what bring you two h-here?" Alphys asked me

"Umm, just wanted to ask about the results of my Soul Testing, is it already finished?" I asked

"Oh, y-yes! The tests about your soul are right over here." Alphys signaled Undyne to wait for her while she gets my results. I followed her and sat on a stool.

"So, anything good?" I asked, as she's looking for the papers needed for me to look at. 

"L-let's see, umm. It's... this one!" Alphys picked the right paper, and let's me see it. ...I can't believe what my eyes just saw. My lips came trembling as I try to speak it out.