Alphys and Starri had created a Timeline-Hopping Mechanical Machine, a machine that allows the user to travel to different timelines, but something goes wrong and you get sent into a different timeline, where Undyne and Papyrus had swapped places. So basically: Undyne is the energetic sister of Sans and Papyrus is the head of The Royal Guard
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Undertale Roleplay
De TodoYes, you read that right. Follow the rules and you'll be fine, if you don't, then you're going to have a bad time
