The part about the Archdevil and possible the Doomsday part could be a reference to Chantelise: A Tale of Two Sisters, EasyGameStation's previous game and the next game Carpe Fulgar would localize. The bracelet part was probably just added for fun, although the funny thing is that the third game Carpe Fulgar localized was a game called Fortune Summoners: Secret of the Elemental Stone, and in that game there was a party member who wore a bracelet with her Elemental Stone on it. However, Fortune Summoners was made by LizSoft and not EasyGameStation, so that is probably just a coincident.
The description may be a reference to the movie The Lord of the Rings:The Fellowship of the Ring. When Gandalf catches Samwise listening to the conversation he was having with Frodo, Sam says he heard "a good deal about a Ring and a Dark Lord and something about the end of the world".