Read it official: VIZ or MANGA Plus. Volume 4 is titled Equal. Chapter 37 keeps the word on the weekly page. Hakuri has begun to wake Isou. The discarded son was scattering his own spirit energy. When he chooses Chihiro, the architecture answers. Dual inheritance is the rare thing. Equality is the rarer one.
What equal is not
It is not a power ranking. Soya wanted possession. Kyora wanted a warehouse that would outlive his children. Tenri wanted a father’s pride badly enough to eat a half-stable Datenseki tool. Equal is the title the clan would not print on a son. The book prints it on a partnership.
Hakuri’s file: Hakuri. Volume 4 jacket: volume guide. The later Storehouse war is chapters 38–44.