When Imperial Prince Morihito (who would later become Emperor Nijo), who was adopted by Bifukumonin and was the foster brother of Korekata, was formally installed as the Crown Prince in 1155, Korekata was appointed as Togubo (Crown Prince's Quarters).
久寿2年（1155年）美福門院の養子で、惟方の乳兄弟にあたる守仁親王（のち二条天皇）の立太子に伴い、春宮坊に任ぜられる。