Sans knew he was going to get sick at least once, but he didnt know he had to wait this long to get sick in the first place.
Sans woke up from a nightmare feeling more cold than normal. All of his senses were amplified in a way that made everything - even just staying awake - terrible. He felt extra exhausted and his stomach was so queasy that even thinking about how large it still was made him want to throw up. And, the most surprising thing was that he was extra tired. Even when he lay there, not doing nothing at all, he still felt as if he was forced to run for hours. The coziness of the cabinet was gone, replaced with a feeling that made him call out his brother's name multiple times, hoping that the skeleton would show up to help him. "P-P-Papy.. Tor-Tori... I don't f-feel good..." His voice was barely above a whisper, as it was too tiring to call out. Even if Papyrus and Toriel were here, they couldn't hear him.
Besides, they hated him now anyway.
"Frisk..." He called out, slightly louder. His voice was ragged and it scratched his throat. "Frisk... I-I need h-helllllp.. It h-hurts to move!" The skeleton could tell that the light was off from the other room, and that he was alone, but it didn't stop him from making noise. "F-F-Frisk...! I want... Help.." He coughed some phlegm, and - what was that? Oh god, it was - blood. He could tell it was blood, as he had tasted it in the back of his throat. He spit it up in his hand, wiping it on his shirt as it was the only thing that had closely acted as a tissue. He felt so terrible. Coughing and wheezing a bit more, the male slowly sat up with a whine, his body trembling with cold and pain. He had a migraine. "O-O-Oww.." Sans mumbled to himself, patting his forehead with a hand. He then sat there, sniffling and coughing and whining about not feeling well. After about a hour, Sans had passed out from exhaustion, his head bumped up against the wall and his arms wrapped around his waist.
Sans woke up later not knowing where he was.
He still had a horrible migraine, and he felt as if he was going to vomit at any given moment, but he had also felt just the tiniest bit better. His body was stretched out in a much more comfortable position, and he seemed to be laying on some kind of mattress. The first thought that came through his mind was that he was gone. Gone from the room, gone from the place where he was tortured. He wasn't even of thinking of what Flowey had told him earlier. The male then tried to push himself upwards, but as he did so he felt a hand push him back down. Not in a harsh way, or a way that would hurt him, but in a way that was like a mom doing to their sick kid. Sans knew that Chara wouldn't ever do that, and Flowey didn't even have hands. So Sans said the name that entered his head first. "Papy?" He had expected either Chara laughing at him or Papyrus' frantic squeals, but what he didn't expect was a completely other voice. "No, Sans, it isn't Papyrus. It's me, Frisk." The skeleton felt the other run their fingers over his head in a soothing manner. It felt... Nice.
"Yeah, I know it sucks. But I managed to get Flowey out of here for a few days. At least until your fever runs down." Fever? He had that? So that's why felt so horrible. "Chara wont be here either, I got her away too." Good. Sans relaxed just a bit more. "I know it's not the most comfy, but it's as good as I could get it to be." Sans wanted to scream at them how nice it felt, and that he was never so happy before. But he just said "I-I-It feels nice.." And kept it at that. He just wanted to sleep. So he did. He drifted off yet again.
The skeleton woke up yet again on the mattress, and he felt that the cloth around his eyes were gone. He didn't open his eyes, however, he just ran his hand over his now bandaged right eye. It didn't sting as much as before, but there was obviously still some infection in there. But he was so happy that it felt just the tiny bit better. He hadn't smiled once the entire time he was here, but now, he was grinning so big and he was so giddy. He put his face in his pillow, smiling and just being so gosh darn happy for once. And this made him think that if Papyrus and Toriel and the others hated him, then at least he would have Frisk! Frisk still loved him, right? He paused, he smile faltering before he came with the conclusion that yes, they loved him. They loved him very much! Sans really wanted to go out and run around, as he was so giddy, but he was still sick. So he was still very tired and was still in lots of pain. So he decided he would sleep the sickness off and then Frisk would help him get out, and they could go around and do things! Sans, for once, went to sleep feeling very happy.
Sans woke up not being able to see.
He felt blood and fluids streaming down from his good eye like a waterfall, and felt that the bandage was gone completely from his infected eye. He could feel bruises and cuts across his entire body. "Frisk?" He asked, his voice cracking. His eye was hurting so bad. And he felt that the cloth wasn't around his eyes anymore. Maybe that's why he was crying. "Frisk? M-My eye is hurting!" Then, seemingly out of nowhere, he felt he head smash against the wall he was up against. He was sitting upwards on concrete, not on the mattress like before. "F-Frisk? St-St-Stop doing that! It hurts!" The male then heard "Oh, I'm not them, whale." Sans instantly froze up. It was Chara. Oh no. Please. Please not take them away from him!
"Now that Frisk is dead, let's get rid of that fever properly, huh?" Sans said one thing to her.
"Did I do something wrong? I-I'm sorry for getting sick!"