Alright, in a nutshell, the story is about a prideful and bloodthirsty MC who worships combat. He’s also the strongest “hero” in canon.
The MC reads a prophecy from a tapestry hidden in the home of a former king. Said king turns out to be an archmage in the capital, and these guys represent the three major cities they were from (I call them the Prosperity Triangle). The MC is also an archmage, representing the capital, and the prophecy states that he’s destined to beat the ever living life out of the former king, who turns out to be a Kirito expy.
Complicated as shit? You better believe it is, and that’s why I chose Parallaxis as a possible title. It’s just the name of the realm they’re living in a la Discworld.
Okay. A good title has multiple meanings. It doesn't have to, but it helps.
Parallax is what you use to determine the distance to something. So you are talking about determining distance. Or we can make it where you are trying to figure out where you are going, or where something is that you are trying to find.
We have a prophecy, so now we are dealing with time. So time and Parallax would indicate that we are determining the future, but there has to be at least two points in time to determine what the future will be.
You have a triangle, which is what a parallax needs to figure out the distance to an object.
We also have the Hero, who is the strongest. However, that's dull. We need to have that two points in the Hero's life for there to be the means of using temporal parallax to determine the future. We got two archmages, but that doesn't continue our theme of trianglation. You will have to have a third one, either a future or past version of one of the two archmages, or a third one entirely.
YOUR TITLE IS A PLEDGE.
You pledge something to your audience with your title. If you want people to read, you need to PROMISE THEM SOMETHING.
So, off the top of my head: The Parallaxed Archmage
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Been giving it some more thought.
Dunno how much of the story is written, but I find prophecy to be dull. So, sticking to your theme, lets put a new spin on it.
There are no singular prophecies. All prophecies happen in tandem. At the same time, but in two completely different parts of the planet, a prophecy happens. Two of them. Two halves. They cannot come true until one person knows both. One prophecy, the one we tell the reader, is happy. The second, ooo. That one is SO BAD, the person who had the prophecy knows, this can never come to pass. And you can make it complicated, or simple. I like this one:
"You are the last hero".
Ooo... now doesn't THAT suck? And whomever knows BOTH prophecies becomes the LAST HERO. So the first half, awesome sunshine and kittens, then, oh, by the way. THE WORLD IS GOING TO UNDERGO SOME SORT OF SEISMIC SHIFT AND WHOLE HERO SYSTEM THING IS BORKED.
Why you need both prophecies to be known by one person? It's basically Temporal Parallax. You need two points in space knowing the distance and angles to determine the distance to a third, so in order to know the future, you need two points in TIME and CULTURE to predict the future.
Hope that helps your theme.