You go to priest with who you registered for 7 seals comeptition. IF you turn in seal stones during the competition week you will only get aa at the reward week (chose "resieve bonuces for colecting seal stones" in dialog). BUT if your's side loses you can't get the aa until your's side wins again and you must stick with that side for all the time. Or you can chose "exchange seal stones for aa" during the reward week, then you will jsut get aa's. Green seal stones give 5aa, blue give 3aa and red give 10 aa.