This ask is sorta similar to my last one on Yandere Classic sans but, how would he react if his YN killed for him. If this feels repetitive feel free to ignore.
Oh stars, you want the difference versions too? Okay here, goes.
Classic Sans: Heβd be horrified. Like absolutely upset. Heβd blame himself, that he ruined (Y/n.) He feels like his darkness is rubbing off on you. Heβd of course help hide the body, make it disappear and make sure the police never even suspect you. He might start distancing himself from you after the fact, riddled with guilt. But heβs a yandere, so he canβt stay away from you. Even with constant reassurance, Sans would always feel guilt over you killing someone over him. It would make him more eager to keep you as happy as possible. Heβs more willing to do whatever you want or desire.
Blueberry Sans: Oh please, you think he didnβt already know. He was behind the whole thing, manipulating you the entire way. Maybe you stopped paying attention to him, so he started acting friendly with someone else. Heβd bring them up casually with you in conversation, making his voice as excited as possible, maybe heβd force his eyelights into hearts for a split second while you were watching. You actually killing them was just a delightful bonus. Now he has so much leverage. Any time you pull away, stop paying attention to him, start getting too close to someone else, he brings up the person you killed. This keeps you tied to him no matter what. Heβd never actually turn you in, he made sure the body would never be found, but you donβt know that.
Horror Sans: Oh, my baby would be delighted. Absolutely thrilled. Seeing you over at the body, looking both half crazed and traumatized, heβd immediately start peppering you with kisses. Loving all over you, mummering how special you are. Heβd start showing you his world. Teaching you the best ways to kill someone and torture them. Showing how to prepare the meat. Even if you didnβt want to learn all that stuff, it was far too late for you. You had showed him how much you cared about him. He was going to teach you his world no matter what.
