Eurydice

Eurydice (Full Name: Eurydice Hume) was born to Laura Hume and Foriden, and raised as an only child. Eurydice would meet Orphea and, after convincing her mothers, would become her girlfriend. Eurydice and Orphea would go to college together, and would be assigned to Aki's group, and would become the mother hen of the group.

History
Eury would be born in 1998 to her mothers, and would be raised primarily by Laura, as Foriden was consistently busy keeping the peace. Foriden would visit her as much as possible, but would only reveal Eury to be half-blooded once she turned 16, causing Eury to distance herself from both of her parents. Eury would meet Orphea at during a soccer game, when Orphea visited with her team.

Foriden was disapproving, because Orphea had demon blood in her, but Eury threatened to leave on her own to be with Orphea, noting that being of different blood had never stopped Foriden and Laura. Foriden would cave, but she would still be annoyed with Eurydice's decision. When Laura met Orphea, she would immediately approve of her, calling her 'her Daughter-in-Law'. Eury would get a job and save up to pay for tuition, with Laura offering to pay instead, and Eury instead offering to pay for Orphea, who would later get a scholarship instead.

Spoilers
If you've read or heard of the story of Eurydice and Orpheus, then you may know that Eurydice will be trapped in the underworld eventually, but for now, you may revel in her presence, and I may make an angsty story of Orphea trying to get her back, or maybe I'll have part of the story be Orphea mourning the loss of her girlfriend, and then someone else saving her.