Hi there, I'm trying to find a way to get the Magus sisters, I've collected every monster from Mt Gagazet and have fought against Valefor,Ifrit,Ixion,Shiva,Bahamut and even yojimbo from Belgimine but the door in remiem temple remains closed,I just don't know what to do because I really need The Magus Sister to defeat omega weapon ;X