About the story, i frankly don't have a complete idea. I do have a general idea, in which the MC would change the world by adding a lot of things here and there, causing trouble for the World Government, making friends and enemies, etc. . It's the story about a guy who has prior knowledge of world secrets and possible future and making use of it in his own way.
I am thinking of giving him a cheat, OP but not too OP. There are a lot of FFs out there with the same concept, so it won't seem much different but I'll try to make it as different as possible. No world unification if ur looking for that.
No romance for now. Never wrote any works so don't know much about how to make one without it feeling forced. There will be a lot of OCs at the beginning as the familiar cast can't be gathered right away, and MC will need a lot of man power to do what he wants to achieve.
If you want to give any suggestions, feel free to do so. Any plot holes left behind too, I'll try to cover it in the later story.
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Update: Nothing truly notable to add. I just want to add this sentence because I can.