It is presumed that the Emperor Murakami tried to secure the future by having Takaakira be the Imperial Prince Tamehira's supervisor, while Takaakira was the first on the list between the Kujo family where Anshi (Yasuko) was born from, and Shisei Imperial family (Imperial family who were given the surname and demoted from nobility to subject).
村上天皇は安子の実家である九条流と賜姓皇族の筆頭である高明を為平親王の後見とする事で将来の安泰を図ったと考えられている。