It takes place a while in the future and they somehow opened a portal into Seru Kai and on the otherside there was mist and Seru that had gone mad, and when the first portal opened it opened other portals throughout the world letting out Seru and Mist. But then explorers ventured inside the Portals and discovered there were also Ra Seru in special pockets that had been protected by the mist. When the explorers got to these protected little pockets the opened another hole into Legaia. Luckily the small area the portal opened up to also became protected. So theybuilt around the portal. Making the town of Proalt. And now there are specialist on Ra Seru in the town that send people all over Legaia to look for young people of extraordinary talent, like the 3 heros of legend, to see if one of the Ra Seru will except them.
That is generally my idea. Sorry if you don't like it just something Iv'e been thinking of. In my dreams this has gotten pretty huge. I have character plots scenarios yada yada yada. Pretty much you would play as one of the young people who would be accepted by the Ra Seru, and you would figure out how the Mist got into Seru Kai and why the Seru and Ra Seru survived. and of course save everyone from the mist.
Comment with your input please