ijji:  Given out during the Gunbound Guild Background Contest Event.  From June 18th - July 2nd, 2008 users could design their own custom background for their guild and submit it by email.  The finalists were selected by the ijji GMs and then a poll was opened up for voting.

Notes About Event:  The original prize was that every member of the winning guild (at that time) would get the background in game and for 1 Month.  However the rules were changed after the event and voting was over and every member received the background for Limitless.