He was Humanity's Last Master.

He fought tooth and nail, bled and cried to save humanity. Fix all it's errors through out time. From the seven singularites to having a full blown fist fight against the king of the demon gods. To the Four Remnants to the seven Lostbelts. He fought side by side with heroes of eld against alien gods that threaten the broken world. It was an Ordeal but they still answered the call. The Ultimate Ones that could wipe reality as long as they exist were felled by him and his allies.

For they were CHALDEA... They have vowed to restore human order no matter what the cost.

And they succeeded... however it came with a steep price, the total reset of all their efforts. The bonds, the trials, the pain all of it was completely erased saving the world from complete annihilation

But that is a story of another time. Another world.

For he, Fujimaru Ritsuka was now just an ordinary high school student attending Sobu High. His greatest enemy is not a Beast that would wipe out existence, nor would it be another Lostbelt King, nor an Ultimate One of some form, but exams and getting along with your peers.

CHALDEA was now a bygone memory, Something that doesn't exist. A long standing achievement that no one would remember. For they won... they won against Fate.

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Hello, Hello! The original version of this book was a book I wrote Before OC4 and the new epiloge in JP. The name was Fate/Secret Invasion -World Defragmentation Correction.-

That book had many mistakes after reading through the OC 4 and final battles and such I've decided to rewrite everything and just publish a new book.

Also this book contains HEAVY SPOILERS from OC2 and Beyond! I'll try to be vague about it but certain names will still be name dropped. So BE WARNED.

So now I've wholly rewritten it in lieu of new information. And the off chance that Part 3 ever releases. Then I'll just try to be vague as to not contradiict the new story as this takes place after the journey.

Please note that this book contains heavy spoilers from OC2 and Beyond!


If you're trying to avoid spoilers I'll do my best to be as vague as possible, but occasional name drops can't exactly be avoided. SO BE WARNED.


This story takes place After F/GO so I won't be delving into fate stories, since all of that has been resolved.


Also this book is a remake of Fate/Secret invasion -World Defragmentation Order-


I was genuinely unsatisfied with the direction of the book and OC4 came along, then the Grand Rank Battles then I got lazy and played other games so that book god sidelined into oblivion.


As for this book, although I wont promise stable updates I will do my best not to drop this.


So originally before the remake of this book I've already planned to have him summon servants before the prologue even ended and that left me unsatisfied.


It didn't feel earned and it took away the agency of the situation.


So my plan now is to wait for the perfect moment before he can summon servants.


So for a few chapters or more I plan on Ritsuka fighting by himself applying everything he's learned to survive.


I'll also try to explain certain terminologies and explain mage craft in detail for those unfamiliar with the fate franchise. I guess in extension other magical/mysterious terminologies from other franchises as well.


I will also be implementing all sorts of media in this book.


For example: Oregairu and such and such. But it wont only contain that. The others will remain a mystery for now.


With all that said I hope you read the book and enjoy!.


Introduction--