But Yoshifusa did not have other son and the privilege of Oni (an automatic promotion system in which an Imperial title are conferred) and the family property were inherited by Mototsune, therefore today it is regarded as Yoshi (adoption), not Yushi.
しかし、良房に他に男子はなく、蔭位と家産は基経に継がれていることから今日では養子と解されている。