Karami Azuma

Karami Azuma is the mother of Tokaku Azuma as well as the older twin sister of Mako Azuma. She was supposed to be the successor of the Azuma Clan but due to Tokaku's birth, her mental state was altered too and she began to oppose her mother (who chose Tokaku as the succesor) which resulted in her being rejected as the heir of the Azume clan. Her dying wish was that Mako, the younger sister to take over.