It was (the reason why the Imperial Prince Tamehira did not become Crown Prince) presumed that the Fujiwara clan's concern about Takaakira having more political power, himself already being the maternal relative to Imperial Prince Tamehira and had a certain position in the Imperial Palace.
これは為平親王の外戚で既に一上の地位を得ていた高明が更なる権力を得ることに対する藤原氏側の危惧があったとされている。