"You saved me the trouble of having to find you to complete the quest... not that I wasn't planning on doing much looking thanks to a post I replied to on a forum. Still, it saved me time, so ill tell you what you need to know so you don't die. Anything else will cost you". Ren brushed the hair out of his eyes as he looked at them. "Observe". He said this as he looked at them, then suddenly seemed to be looking more at the air in front of him, maybe looking at some windows that popped up. 

"Judging by how much EXP you all have... and your current Stats, its easy to see that you all have fought a couple of enemies or completed some quests". Somehow or another this boy was able to see this, it possibly being connected to the word he said just a few moments ago. "Well first and foremost let me tell you all to not be idiots and assume that we are in some kind of game. This is still real life. The only difference is we have obtained a special power that turns us into game characters, as if you have looked at your Skills you would have seen the Game Character's Body skill that says it lets us live as game characters in the real world". 

"Next a little information about this world we live in. Ill only say it once so pay attention..." It was obvious that Ren didn't care for neither their company nor the company of people in general and wasn't making any effort to hide it. "The Gaia, or Transcendental Will theory, and the Multiverse Theory. They are both real. The first one states that this world we live in is alive and it has a will. This can be called numerous things like Truth or Fate or even God. According to that Messenger of Gaia, who I also met, Gaia is the one who gives special powers to people. We are not the only ones with special powers as there are all sorts of others like Espers or even magic users. He did say though that this is his first time seeing a power like mine, or now ours since you all popped up. Judging by the quest being completed just now I would have to say we are the only people with this particular Gamer power". 

Ren didn't stop there though, not really giving any time or thought to any questions they may have had. "The next is the Multiverse Theory. There is our world, Earth, which is alive. Then there is the other world. He didn't tell me much about it, except its more like a copy or reflection of ours, a sort of pseudo-reality where all sorts of supernatural forces and beings like the imps you all fought or even where magic comes from. Apparently these worlds are connected more or less. That is all I know on that subject". Ren seemed a little annoyed by that judging from his tone, as indeed Ren really did want to know more about this. 

"Now the info that will save your lives. The Interference Law. Apparently if you use your powers to affect any normal people or the world around them then Gaia, the very world we live in, will kill you. As in you may get struck by lightning or hit by a random truck. So just don't go showing off your powers and you should be fine. This is what Psuedospace is for, the area we are in now. A sort of fake space that are made by Gaia and capable of being called forth by anyone with powers where people can use all of their supernatural powers all they want and it will not affect the real world at all". 

After that Ren's explanation ended. "So is that all you want to know, or do I need to tell you how to use your Skills and open your windows and all of that other beginner's stuff. If so, pay me 5,000 yen. I don't care who does it, but unless you all want to not know how to use this power at all then I suggest you pay up". Ren held out a hand now, waiting for either someone to decline the offer or accept the offer. 

Rainer would, since this was the school he would be going to if he chose to regularly attend school (ill leave that up to you), recognize this student as that strange, very quiet transfer student who came in about a month ago near the end of the school year. The one that people said was very cold and distant from everyone else and was also one of the biggest otakus in school since he was usually always seen playing some game or reading some manga.