It was complete. The scientist rubbed his hands together evilly. He had hid in the basement of FBEA for 7 years, avoiding detection in order to finish his greatest creation yet--a time portal to different worlds. Different worlds, you say? But they don't exist--except in fairy tales right? Well, they failed to mention the fact that fairy tales are TRUE. What you've been hearing has been nothing but LIES. It was designed that way of course, because only certain people can cross between worlds. If that delicate balance was upset, it could easily throw the entire universe into chaos. Cliche? Sure. But I bet you thought the movie "War of the Worlds" was fiction too, eh? That alone goes to show how little you know.
Anyhow, back to the scientist. His name was Bob. No, I'm serious. It's Bob. That's how he's been avoiding detection all these years. At 5'10" and 200+ lbs. he ain't your stealthy ninja. <_< Now Bob is a fairly smart guy. In that evil kinda way, but smart nonetheless. One thing he failed to realize however, was that Portals are very difficult to control. Coincidentally, this portal lead to the exact dimension from which RIN, the sword of the FBEA CEO originated. This world called to the sword and the sword wanted very much to go. It's not unlike when you travel. No matter how far you go, the best place to eat and sleep will always be home. The same emotions were coursing through RIN. She wanted badly to go home, after being brought here milleniums ago for some long forgotten reason. But a sword is bound by it's master. In this case, Kyrene. RIN had no choice but to bring her master along. That explains how Kyrene ended up where she is.
As for Bob, he was not the type of human that could cross between worlds with ease. He has set off to find someone or something to help him.
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NOTE: ya i kinda suck at this, but oh well. it stretched my brain. this section explains how Kyrene ended up with Haishiro +Laurel.