Talk:Tsuchimikado Motoharu/@comment-112.200.40.174-20140430122825/@comment-94.175.151.35-20140430140155

To answer the question:

The real life Tsuchimikado family were descendants of a famous Onmyoudo user named Abe no Seimei, who is noted in series to be an ancestor to the characters from Tokyo Ravens and To Aru's Motoharu, that is what they have in common.