everyone should do all mooshu side quests for your title of grandmaster and i mean all mooshu side quests i know they caan seem not worth it at some points but they are all worth it and to make sure you did them all you will have 3 badges if you did them all you should have badges called peacemaker spirit walker purifier hamestu village is where you get peacemaker shoshun village purifier and spirit walker the yoshihito temple all the areas and dungeon in there you must do to make sure you get to grandmaster quests givers oak heart moss back and i forgot the other one but he not hard to find i hope i helped some of you get your grandmaster title