Words convey meaning. If you use the wrong words, you convey the wrong meaning. Make sense? Just because it's easier, doesn't mean it's right. Especially in something like a synopsis, where you're trying to explain events and characters. Leader does not equal a king. Just...sort it out, man. It's little oversights/cut corners like that that damage the credibility of your work.
"The two kings who waged this great war find great pressure from society to fill the void. The world wants them to tell them what to do, but they don't know what to do themselves so they run. However, their past catches up to them
I'd rewrite that as something more like:
Although the war had finally come to a close, the two leaders were still fighting. Battling with the responsibility placed on their young shoulders, they choose to run. But they will soon learn that there are things that cannot be escaped, and distance alone will not seperate them from the burden they are destined to bear...
Or something epic like that. I wrote that in one go so sorry if it's crap, but I'm late!
The only thing Suikoden lacks...is dinosaurs.