You are Genocide Frisk

You were walking throughout New Home with your hand gripped on the Real Knife. Currently, you're only at LV 18 instead of LV 19 like usual because you couldn't find Papyrus in Snowdin and the ghost, Chara, is floating next to you.

Chara: "Where was that stupid comedian's brother? Ugh, whatever. LV 18 should be good enough."

Soon, it starts to rain, which is weird, but you ignored it, but the rain made you feel even more guilty than before for all your genocides and then, you notice a familiar face in the distance, It was Sans but he had Papyrus' scarf around his neck and he was holding a umbrella in his left hand yet he still had his permanent smile.

Sans: "So, long time no see, huh, kid? Heh, well, I bet you know what's going on. But I know Pap wouldn't like to see me do this. He still believes in you, y'know? But that's not important right now, is it?"

Sans sigh as he looks around the rainfall on New Home, and he doesn't see Chara at all. He only sees you, and Chara raises a brow at your frown.

Chara: "Don't tell me you're having second thoughts, Partner. We came so far, and there's only a few monsters left. C'mon, let's just get this stupid comedian over with."

Sans finally focuses back on to you, and his eyelights have some hope in them, and then he puts his hands in his pockets of his jacket

Sans: "Kid, I know that you're still in there. I know you're still the Frisk, I know. Please, kid, just give me mercy and reset. I don't want to see Pap turn to dust yet again."

As Sans's eyelights and Chara's eyes are on you, you feel a pressure on your shoulders. You felt the wetness on your clothes, weighting you down. You don't know what side you should listen to.