Togubo (Crown Prince's quarters) was sometimes also called Togu-shiki (the board of the Crown Prince's affairs) in conjunction with Togunofu (an official in charge of education of the Crown Prince) from the mid Heian period.
平安時代中期から春宮坊に対して東宮傅と併せて「東宮職」と呼ばれることがある。