After you get to the part in-game where u get to the past you will have 4 lv40 characters in the guild ( rastul's team/party) get them and take all of their items and equiped them to your own charaters because they will be gone after you finish the journey in the past ( rastul's party will be gone not the items) =P FREE AWSOME ITEMZ!!!
ALSO its better to use ur own party and not them even if the monsters got stronger..more exp if you dont use them!!! (monsters are on steriods in the past lol j/k)