When Two Fates Intertwine (Sans x Reader)
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MatureOngoing6h 41m
Last published Sun, Dec 21, 2025
[THIS IS A SEQUEL TO MY OTHER FANFIC "WHEN TWO SOULS MEET!" If you haven't read it, I would highly suggest it--the story won't make much sense otherwise.]
Sans has finally found someone he can trust--Frisk's sister, the eighth fallen human. After months of step-siding and awkward interactions, the two are finally a couple. Things are slowly falling into place--there are no more resets, and Chara and Flowey have been a lot more quiet in the last few months. But things can't stay this way... can they?
Note: The story was put on hiatus early on, and updates are now very sporadic. Despite that, it's still a labor of love!
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Series
ZanaTale: An Undertale Alternate Universe
27 parts- 14 parts
29 parts
18 parts
1 part
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Frisk is living a happy life with their friends/family, the monsters! After book one in this series, they have been spending much time with Asriel and Chara as they have bonded closer with each other. Suddenly, Frisk starts acting suspicious and Sans decides that he must spy on them to make sure they're okay. What will happen when someone from Frisk's other life clashes with their new one? This is the second book in my DETERMINATION series, please read the first one before this which is just called Determination- An Undertale Fan-Fic. I do NOT own Undertale but I do own this plot/story. Thanks to Toby Fox and the Undertale team for making the best game ever! Hope you guys like this story :)
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