In his Chūhen gikyō 中邊義鏡 （Mirror of the doctrines of the Middle and the Periphery） cited in Saichō’s 最澄 Shugo kokkai shō 守護國界章, Tokuichi 德一 called his disputant “Chikō” 智公 （a person named “Chi”）. According to the contemporary habit of this kind of naming, this “Chikō” denotes a monk, the latter half of whose ordained name is Chi 智. Tokuichi’s disputant is thought to have been a monks from Kantō. If this is correct, there is a high possibility that “Chikō” was Kōchi 廣智, who was a promotor of Tendai doctrines in Kantō. Tokuichi also called his disputant “Henshu” 邊主 （a person of the Periphery）. This “Henshu” is also mentioned in the last portion of Tokuichi’s Shingonshū miketsu mon 眞言宗未決文 （Unsolved Questions concerning Esoteric Buddhism）. According to Tokuichi’s description, this “Henshu” cited a sentence from Dajue’s 大覺 Sifenlu xingshichao pi 四分律行事鈔批 as a reason for his argument concerning the transmission of the Yogācārabhūmi 瑜伽師地論, which is a topic discussed in the Chūhen gikyō and Shugo kokkai shō. Such a citation is suitable for Kōchi, who belongs to the lineage of the Japanese Vinaya school founded by Jianzhen 鑒眞. As a conclusion, we can think that Tokuichi’s disputant in the Chūhen gikyō is Kōchi, and that Kōchi is also mentioned under the appelation “Henshu” in Tokuichi’s Shingonshū miketsu mon.
