It is inferred that Tokitada, who had sufficient experience, was chosen for reformation of the Kebiishicho (Office of Police and Judicial Chief), because kebiishi, Nobufusa KOREMUNE, TAIRA no Sukeyuki, and TAIRA no Yasuyori took part in the Shishigatani Incident.
鹿ケ谷事件で検非違使の惟宗信房・平資行・平康頼が陰謀に加担していたことから、検非違使庁改革のため経験豊富な時忠に白羽の矢が立てられたと推測される。