Grillby's was the local bar and food joint in Snowdin. When you and Sans walked through the door, some of the monsters looked at you suspiciously. You wondered why the monsters weren't attacking you. It was probably because Sans was with you. Sans led you to the bar and sat down. You sat right next to him. Once you took a seat, a noise erupted from under you. You had a face on that said, "I expected as much." You stood back up to find that a whoopee cushion had been placed on the stool. You looked over to Sans, who was trying to hold in his laughter. "Watch where you sit. Weirdos like to put whoopee cushions on the seats." You gave him an angry look before sitting down again. "Aw, c'mon. You can't stay mad at me and my jokes forever. You know you like it when I pull pranks on you." His last statement had you blushing. Thoughts were going through your head about what kind of pranks he would pull in the future. "Okay, so what if I like you?" You caught your drift and Sans started to blush. Out of embarrassment, you lowered your head into your arms, leaning on the countertop. The rest of the time at Grillby's was quiet between the both of you. 'That was a waste of time. At least I got to eat.' you thought as Sans escorted you out. "So, where to next?" you ask Sans. "Do you?" You look at Sans, confused. "I'll ask again." He takes you by surprise and pins you up against a wall. "Do you like me?" You hit your head which in turn, caused you to close your eyes in pain. When you open them, you are met with Sans' face centimeters away from yours. You blush as you answer Sans. "W-why d-does it m-matter?" You silently curse yourself for stuttering. "Knew it." Sans puts a skeletal finger on your lips and says, "This relationship is our little secret." He holds out his hand for you. You held on as the both of you teleport to a new area. That's when you decided to speak again. "What relationship? I never asked you to be my boyfriend!" Sans smiles smugly and says, "Okay then. I'll ask you. Y/N, will you be my girlfriend?" You were in shock. How could he ask you so easily? If you had to ask, you would be a mess. You broke your eye contact with Sans and blushed hard as you answered. "F-fine then, I guess." For the rest of your journey, Sans followed you around, protecting you from any monster who came into contact. You knew you weren't in Hotland anymore. So, when you reached a colorless version of Toriel's home, you asked Sans where you were. "We're at New Home. Our leader isn't good at naming things, so this is what he came up with." As you and Sans explored New Home, you came upon two gift boxes. The first one you opened, had a knife with swirled patterns engraved into the blade. You decided to leave it in the box. The second box had a heart-shaped locket. It looked like it could be opened. You opened it to find two pictures. "Hey, Sans! Check this out!" you called. Sans takes a look at the pictures and explains who the people in them were. "Those were the leader's son and adopted daughter, Asriel and Chara." (Chara is a girl in this story. Deal with it.) "They were only kids at the time. Asriel was going to become the next leader and Chara would become his second-in-command. One day, Chara died of an illness. Asriel wanted to bury Chara's body on the surface, since that's where her real home was. The humans saw him and beat him violently. HE was becoming weak, so he picked up his sister's body and returned to the Underground. When the leader and his wife saw their kids in unstable condition, they rushed over to help heal them. But they were too late. So, they buried Chara's body under a bed of golden flowers and Asriel's body seemed to disappear." You landed on my grave. It gave you shivers just thinking about it. You and Sans exit New Home and keep walking until you reach a long hallway. "Where are we now, Sans?" you ask. Sans didn't answer back. He didn't even look at you. "Uh, Sans?" Sans' pupils were gone and he looked...nervous. "Crap." was all he said. You looked straight ahead for your answer. Sure enough, there he was. The leader, Asgore.
A/N: I like the "Chara is the narrator" headcanon, so that's why I said "You landed on my grave" instead of saying "You landed on her grave". Also I'll be on vacation, so don't expect a new chapter in the next few days. Thanks for reading!