I get what you mean but Killer isn't a Sans' AU, he's a timeline of Classic so they're not wrong. But the sudden comment and possible implication is hilarious, I had to pause for a second
OMG, YES, I adore the highschool AU, its so good! ✨✨ First time seeing someone actually differentiate between the Sans AUs, Killer and the twins, because ’Something new’ is a timeline, and Dreamtale is, yeah.
the intro gave me flashbacks of the sound i have to listen to constantly until i got a new mouse that isnt broken. holy shit i actually froze as soon as i heard that. my eyes WIDENED