-----(Y/n)'s POV-----
You let go of Blue. "Sans." Error said flatly. "I will let you choose. Stay here with your brother, or come back with me and (Y/n)." Blue's smile dropped. "I...i...." Blue stopped to think. "I...I'll stay with-" Blue's sentence was cut off by the sound of a portal closing, you being pulled in. "-(y/n)" He finished.

You landed harshly on the white ground, Error dropping you from his strings. He walked up to you and offered a hand. As much as you hate him right now, a hand would be very helpful from the lack of energy you have. Reviving someone really drains you. You took it and Error pulled you up. You started to fall over, but Error caught you. You were face-first to his chest, and his arms were hooked upwards under your arms. He was strangely warm. "(Y/n)? Are you alright?" He asked. "Yeah...just, tired." You responded. Error sat you down and told you to stay there for a bit. He snapped his fingers and teleported away. A minute later, he came back with a bed. You don't know where he got it or how he's carrying it, but it's a bed and you're tired. Error placed the bed down and patted it, gesturing for you to come over and lay down. You happily walked over and fell on the bed. The pillow kinda smelled like flowers. A few seconds later, you were asleep.

-----Error's POV-----
I feel something. Something that's telling me to lie down next to her. I ignore it and look at (Y/n). She's sleeping so peacefully, some strands of (h/c) hair falling over her face. I smile warmly. I swear, she's the only one who can really get to me. I pull the covers over her to keep her warm, the Void can get a bit cold. I tuck the hair behind her ear and smile again. "Good night, (Y/n), I..." I stopped myself from saying 'I love you'. She might be pretending to sleep! "Yeah, good night." I said, finishing my sentence. She might hate me again, who knows.
Suddenly, my phone starts to ring. It's Sans Classic. I answer it. "Hey, Sans." I say quietly, trying not to wake up (Y/n) . "hey, glitchy me. ink asked me to tell you about an AU welcoming party. can ya come?" He asked. "Sure, I don't have much to do anyways. Also, is it ok if I bring a friend?" I acknowledged and asked. "sure. see ya there." And he hung up. An AU welcoming party? Sounds like something (Y/n) would like!

-----(Y/n)'s POV (in the morning)-----
You woke up from your sleep, yawning. "(Y/n)! You're up!" Error said cheerfully. "I want to take you somewhere!" He said again. "As long as I'm not forced to kill someone again, sure." You replied. Error smiled. "Great! Let's go!" You could see a faint yellow blush on his cheekbones as he grabbed your hand. He opened a portal to a nice clearing, but there were so many people! And they all looked very similar! Error led you to a mini stage, up to a person waiting for them. "Alright, (Y/n), welcome to an AU welcoming party!" Error said happily. "Hey, Error! You seem happier today!" Error's smile drooped a little. "Yeah. Just happy my friend can experience it." He said, kinda coldly. He must not like this person. He had a light and dark brown shirt with blue streaks on the shoulders, a blue hoodie tied on his waist and a giant paintbrush. "Hello! I'm Ink Sans! It's very nice to meet you!" 'Ink' said happily. "I'm (Y/n)! And, same!" Ink walked away to talk to others. You looked over at all of the Sanses. There were so many! There was one guy who had a really fluffy black hoodie, another had completely white clothes, glitches covering his eye, and another had a floof of green hair under a grey hat and he had a brown beard.

Before you could look at any other Sanses, Ink started talking. "Hello, AUs! Today we are here to welcome a new AU to the internet. Please come in, Yarn!" (A/n Yarntale is one of my own AUs. Please don't steal it) A Sans stepped up onto the platform. He looked shy. He looked very similar to Sans Classic, but he had a dark grey beanie on and he was made entirely of yarn. His eye sockets were buttons, and the white pinpricks of light were smaller white buttons. He was a little shorter than Ink.

(I can't draw yarn I'm sorry)

"Oh.. Hi everyone. I-i want to thank Ink for welcoming me and all of you for being so kind..." Yarn smiled his stitched smile and stepped off the platform. Ink smiled at him and continued. "I also want to welcome Error's friend (Y/n)!" A lot of them cheered, but one of them started crying. It looked like the one with the fluffy black jacket, but he had a flower crown on his head. Everyone went silent. "She reminds me of her..." He said, sobbing. You walked over to him. "Are you ok?" You asked. The Sans looked at you, red tears streaming down his skull. "When a human fell down to the Underground, I fell in love with her. But every time she died, a flower grew on her head. One day, she died... and..." He started sobbing again. "...she never came back..." He finished. You felt hurt. This Sans' love died, and he hasn't been himself sense, you guess. "Do you have anything she wore all the time?" You asked him. He looked at you, then to the ground, and then he unhooked a golden necklace from his neck. "She...she wore this everywhere and never took it off..." He said, still crying. You opened your hand, and Sans, hesitantly, gave the necklace to you. You cupped it in your hands and closed your eyes, concentrating. Suddenly, strings of memories flashed through your mind.

-----MEMORIES-----
Sans stood behind the girl, a creepy smile on his face. The girl was obviously scared of him. Sans grabbed her by red magic, and carried her to his house. A Papyrus seemed very pleased to have a human pet, but annoyed that he couldn't have her soul.

The memory faded, and a new one played. They were all in the house, eating some spaghetti. The girl seemed to be treated as a friend now. They were all talking, laughing, and asking the girl about the ring of flowers growing on her head. She brushed it off, and complimented Papyrus on the spaghetti.

The memory fades, and a new one appears. More flowers are on the girls head, and she's walking hand in hand with Sans. Sans whispered something into the girl's ear. The girl blushed and hugged Sans. "I love you, too!" She exclaimed happily.

The final memory appears. Sans is holding the girl in his arms, not caring about the blood soaking his jacket. "Sans..." The girl started. "Yes, sweetheart?" Sans replied, red tears starting to fall. "Smile for me. Please?" The girl said with much effort. "Of course...sweetheart" Sans said, with a real smile on his face. "Thank..you... I....love....youuu..." The girl said with a smile on her face, her last breath leaving her as she said 'you'. Sans' tears fell faster, and he hugged the girl's dead body. "I love you too, sweetheart." He said, collapsing to the ground.

-----MEMORIES END-----
You open your eyes to notice two things. That everyone made a circle around you and is staring at you, and that the locket in your hands is glowing a gentle green. You open the heart locket, and a small, green soul comes out. You look at the soul. "Please, come back... Sans misses you so much, and he hasn't been himself. He's hurting so much... come back, Frisk..." You whispered to the soul. The soul grew to the size of a regular soul. Then, it glowed a golden glow, and the glow took the shape of a human, and after a few seconds, the glow bursted away from a human girl. Sans looked at her in disbelief, but then ran to her and gave her a hug. The soul was no where to be seen, and all of the Sans' looked at you in amazement. You smiled at the couple, until black spots covered your vision and you blacked out.