Previously…
The most dangerous aspect of the words "right" and "wrong" is how easily people are willing to change adjust their definitions of these words to suit their needs.
First Example:
The end of the second decade in the 21st century was rattled by the sudden appearance of a Gate to another planet in downtown Tokyo. In doing so, it yielded the promise of new cultures, places, creatures, and that fascinating enigma called magic. It also threatened to upend a status-quo that had been in effect for nearly a century. In a fit of panic, the United States made a minor modification to right and wrong, and by the time that the sun came up over the Sankai Resort in Hakone, Japan found itself owning the most dangerous piece of Kompromat in human history.
Second Example:
In an expedition on the far side of the Gate, 1st Lt. Itami Yoji encountered a living God, one of twelve, which demonstrated unprecedented control over the nature and creatures of the Special Region. Fearing a long-term threat to Japanese interests, a slight change to right and wrong lead 1st Lt. Akira Yanagida to forge elements of Itami's report on the interaction, blaming a mysterious danger on both sides of the Gate on the Goddess Hardy.
Third Example:
Fearing for the fate of their country, and possibly the world, Japan decided to utilize the Kompromat from the Hakone Incident. In the ultimate readjustment of right and wrong, the only country in history to be target by a nuclear attack demanded that the United States provide a nuclear deterrent against Hardy. America agreed, and set into motion a plan to provide a single weapon, discretely, in exchange for access to magicians and other Special Region biologicals for future study.
The fourth and best example, however, was where the lines truly blurred, as the three previous cases required something wrong becoming right. There was also one noteworthy incident where something right became wrong.
The method that America chose to sneak a nuke into the Special Region was to disguise the launcher as part of a space program. To complete the charade, the Defense Department hired a NASA engineer, Carol Dawson, to teach the locals about the wonders of spaceflight. One such local, Greta La Sareteian, took a strong interest in the topic and became Carol's protégée, ultimately learning some aerospace engineering topics well enough to teach them to others.
One side effect was Carol's intervention during the ultimate nuclear crisis versus Hardy, where she and Itami uncovered Yanagida's deception and averted the destruction of Bellnahgo and its citizens. Instead, the weapon was deployed as a shock-and-awe prop. An invading force from the Kingdom of Carenth was ravaged, and the gods, traumatized by the radiation, conceded to the American threat, "If any god attempts to intervene in the affairs of humanity again, we will burn them out of the fucking heavens."
Another side effect of Carol's involvement was an academic debate before the Rondel Council, which not only reshaped the Special Region's view on Earth and Space sciences, it provided Falmart's academics with the mathematical know-how to proceed in many previously-inaccessible areas of engineering. With the war over and an increased prospect of trade with Japan, the Saderan Empire turned its attention towards industry and modernization. A key figure in this transformation was Greta herself, now one of two living Saderan astronauts, and the head of a push to develop magic-powered air travel.
As the American and Japanese governments watched the Special Region take flight, memories of their own histories pressed them to worry about Falmart discovering the military applications of aircraft. The belief that the Special Region should have free access to Earth science drifted from right to wrong. In the space of a week, access to Earth libraries was revoked, communication with Earth universities was terminated, and Greta and her team of builders disappeared one night, never to be heard from again.
One minor adjustment, from right to wrong.
This is the story of the fallout from that decision.
Author's note:
In addition to the standard fare from the anime/Light Novels, this story introduces some small world elements from GATE Season 2: Weigh Anchor. Since information about some of these characters and cultures has been sparse, and only one volume of the story exists, I've had to make guesses based on existing artwork and plot/character summaries. As more details are released I will go back and update this story accordingly. If you're worried about being left behind, don't worry. All introductions of Season 2 material will be treated as if you've never heard of them before, and will be explained at length sufficient for their respective roles in the story.
If you're new, I highly advise going back and reading A Sky Full of Fire. If you're a returning reader, welcome back!