In the Kenmu Restoration established after the downfall of the Kamakura Bakufu (Japanese feudal government headed by a shogun), Tadaaki was appointed an official of Zasso-Ketsudansho (agency of Kenmu government to file lawsuits); however, he was held responsible for problems in the new regime and was forced to enter the priesthood along with Nobufusa MADENOKOJI.
鎌倉幕府滅亡後に開始された建武の新政では雑訴決断所の役人を務めたが、新政の混乱の責任を取らされ、万里小路宣房らとともに出家させられている。