Swap! Sans

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💙I am a firm believer that his innocent persona is just an act, especially in a Yandere AU. He'll act innocent and try to persuade you to give in to his every offer, you find it cute, of course. You fall for his trick.
💙Sans is in no way delusional. He knows what he's doing, he knows it's wrong, he just doesn't care. He's sees it as you are his and he shouldn't have to put a barrier between his love for you and the obsessive protective feelings he has.
💙Papyrus knows what Sans is doing. He knows how unstable his younger brother is. Besides knowing this, Papyrus doesn't really try to stop his brother. Sans is happy, you're happy, he's content. No one is getting hurt (not yet anyway) and you seem to love his brother just as much as he loves you (minus the obsessive tendencies).
💙Sans is going to make you believe that you're happy, but you're really not. How he accomplished this is unknown, but he did. In short, you'll spend your whole life with him, chained to him without even knowing it. Sans loves you, Papyrus cares for both of you, and you are being (unknowingly) held against your will.

Next up is Killer Sans and then Underfell Sans!

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