(Insert all that normal Frisk Hard Mode 2031 dialogue here) * ...wow. * can't say i've heard of that guy. * he sounds really great. * but based on your expression... * i'll bet you had something to do with all of that. * and if that's the case... *Screen blink, the screen reappears with Sans' usual eyelightless eyes* It just gives me more of a reason to get to the point. (The idea behind this is that Deltarune!Sans ≠ Undertale!Sans, and Sans is only fighting you on Genocide in Undertale because if he doesn't, his timeline's doomed. And if you've already ruined someone else's...well, that just gives him even MORE of a reason to give his all, now doesn't it?) (So yeah, this is trying to apply all of my fact-checked knowledge of Canon!Sans to Undertale Hard Mode 2031.)