Error jumps in the void and is now Naruto Uzamaki....He just wanted to rest dangit! Well lets see he can get use to this new life. ((I don't know when I will come back to update this. My Naruto drive gone blah Sorry everyone for the wait, and promises. Just caught up with other work too. Maybe one day it'll come back. Still enjoy what here for now. Thank you)) Characters do not belong to me. Art Cover doesn't belong to me.

After viewing Subaru's life, and the possible realities, everyone needed a breather and decided to view Subaru's homeworld. Particularly, it's history. Thanks to the military duchess and Subaru's interest in military history (not a canon thing I think) everyone just agrees to view how warfare is waged on the land. This is the 2nd book in the trilogy of reactions. I will focus on warfare and history, but mostly warfare. For my readers who loves military history, I hope this does not disappoint you. For my readers who are not into military history, may you find this intriguing enough to read. Disclaimer: I don't own the images for the cover. And I do not own Re Zero. This is simply a fanfic, I do not intend to copy someones work.

Summary:Fatal Error is the name of a 2 things one is a undertale au from the past that by now as years past has probably been forgotten not until a player that enjoys the past joins the game YGGDRASIL decided to bring the past to the future by making his character based off this very Sans Au but did not expect that he would soon become this very character in YGGDRASIL and suffer becoming what will be a mystery to the players of said game seeing him....live videos, recordings, sightings ect. he will be know now as a fatal error to the system and highly dangerous to said players also well know for his insane manner (Fatal error will be ooc in this fanfic still have a sane self but still have an insane mind like canon and will join Ainz in the New World but not being part of his guild hope you all enjoy this idea)