The House of Undertale AUs

Chapter 19

Sans's POV:

"What?!" Y/N exclaimed. It was a week after Underswap came to the house. They seemed pretty settled in, although I didn't understand why US Sans is so much like Papyrus and US Papyrus is like me.

"That's right," I said proudly, liking the shocked expression that she had. "I'm now a teacher at Toriel's school."

"So, mom's the principal there?" Frisk asked behind me. I turned around and nodded.

"Can't believe that lazybones is actually gonna do something," I heard Chara muttered. I turned towards him, ready to summon a bone to slice his neck.

"Hey, you two, shut it," Y/N chided. "How are you supposed to take care of everyone else when I'm gone while you two just fight each other?" Me and Chara wisely stayed silent.

"Ehh, whatevs," I shrugged. "What day is today?"

"Monday," Chara snickered. I froze and looked at the time. It was 8:20.

"Oh, shoot!" I cried out. "I'm going to be late." When I saw Y/N roll my eyes, I instantly remembered my teleporting powers. With a small pop, I teleported to my classroom just as the bell ring.

"It looks like you're going to have to get use to that," I chuckled as I saw my students' surprised expression. "My name is Sans... err, just call me Sans. I'm your new teacher."

After a few hours of teaching and one short break time, it was lunch. I was packing things up when five girls came up to me, giggling. One bravely walked up.

"Hi, Mr. Sans," she politely said. "My name is Jessica and these are my friends. We were just wondering if you'd like something. You know, like a first day treat."

I thought over this carefully. "I guess I don't mind," I finally said. She giggled and quickly kissed my cheek. Then, she ran off with her other friends.

I blinked, absolutely stunned for a moment. Then, I quickly teleported out of the classroom and back home where Y/N was just passing out some plates of rice with salmon and broccoli. Undyne's plate had beef instead of salmon.

"Hey, Sans," Y/N called out cheerfully. "You're here!" I went towards the seat near UF Sans. Y/N put down a plate of food for me, and then frowned out of the corner of my eye.

"Is that... lipstick on you?"

I flinched. Everyone was staring at me and I had no excuses for them. I felt my face growing warmer and warmer by the minute. Y/N sat down on the seat right across me and looked at me, her face expressionless.

"Umm... I don't think... uhh," was all I could stammer out.

"Come on, dude," UF Sans patted my back. Hard. "Who's the lucky gal?"

Without thinking, I mumbled, "There's this girl at school with a ponytail and was wearing a pink t-shirt and blue jeans. She came up to me and kissed me."

"GOOD JOB, BROTHER!!" Papyrus congratulated me. "YOU GOT YOURSELF YOUR FIRST KISS!"

My eyes instantly landed on Y/N. she looked very uncomfortable. Of course! My real first kiss was actually with her, not that girl from school! But now, Y/N looked downcast.

Then, she stood up. "I'm not that hungry right now," she said. "I'm going to my room."

"You made your room?" I asked. She nodded and pointed towards the middle of the house where there was a wall. But, instead of a wall there were a set of doors.

"Ahem!" Toriel cleared her throat. Y/N turned and looked at her. "I don't mind you not going to school because you're busy but you still need to catch up on your studies." I had no idea what that mean but Y/N understood.