Konnosuke was searching for a new Saniwa to help him with his journey to the past and make an army by bringing blades to life to defeat the enemies who are trying to change the course of history and apparently he saw our Aichi to have that kind of potential and is now seeking his aid and is nurturing him to be a Saniwa.

There was a head shrine maiden who had two child, one boy and one girl. The older brother's name is Aichi, he is in his middle school years and the younger sister's name is Emi, she is in her elementary days. Here is a background story of a surprise character in the TKRB X Vanguard story the Divine Message