User blog comment:Ariel Saeba/Mythology and Character Origins in DxD/@comment-28087290-20160330000304/@comment-27232228-20160330002109

There are no logical meaning that can be related (but it's not like Ishibumi just randomly throws it), but so far, the prominent members (also the one who inherited Suzaku at the present) of the clan are females, so IMO it refers to the allusion that most of the inheritors of Suzaku are female (again, no explanation that makes sense so take it with a grain of salt).