On February 10, 1009, Korechika was invested with Shonii (Senior Second Rank); however, on March 25, a scandal of curses put on chugu and the newly-born Imperial Prince erupted, and Korechika's aunt TAKASHINA no Mitsuko was imprisoned and Korechika was forbidden to visit the Imperial Court.
同6年正月7日、正二位となるも、翌月20日には中宮と新生の皇子に対する呪詛事件が起き、伊周の叔母高階光子が入獄させられ、伊周は直ちに朝参を止められた。