Sapphire

Sapphire is the younger sister of the previous Demon Lord, Wilbert thus making her the aunt of Mio and Maria Naruse, as well as the biological mother of Basara Toujou. Though not much about her has been revealed, Sapphire is shown to be both compassionate and courageous as she sent back her allies to fight against Jin during the Great War so that no one would get caught up in their battle. In their several battles, she may have developed a hint of a rivalry with Jin since she hated the fact that Raphaeline intervened in their battle despite mentioning that the Great War ended. She is also shown to be cooperative as she assisted Raphaeline, who was meant to be the demon's greatest enemies to rescue Jin from the dimension they were trapped in. Sapphire soon grew to care deeply about Jin and Raphaeline to the point where the three decided to have a child that was theirs. However, after Raphaeline couldn't return from the Divine Realm, she was unable to enjoy a life with Jin and Basara without her. Though having heard about the incident in the Hero Clan, Sapphire met Basara and consoled him about the incident before erasing his memories of him meeting her. She cares enough for Raphaeline is further shown as she went into the Divine Realm in order to save her from even the Ten Gods who imprisoned her.