Those who take Miya as an ancestor carry a nobility stronger than mere honor.  His guidance allows to ignore the effects of lack of rest or sleep for a certain period. He will abandon anyone who turn away from helping those suffering war or disaster. 
Those who take Otomo as an ancestor are clever, notoriously serpentine, had a smooth tongue and flexible mind. He will forsake anyone stupid to become outmaneuvered by a political rival of lower station, or anyone who willingly betray the Imperial house. 
Those who take Seppun as an ancestor can draw on her near-fanatic desire to protect the Hantei.  Her guidance allows his descendants to touch the harmony of the universe more easily. She will forsake anyone who ever embrace a heretical religious viewpoint or place his own needs, goals, or desires ahead of the Imperial house.