Once Again, Athanasia's Twin Sister

Ephemera de Alger Obelia was born as Athansia's younger twin, named out of mockery by their own father. While her poor elder sister became obsessed with trying to catch Obelia's Sun's eye, she honed her great magic in order to gain the influence to back up her sister who would eventually become Empress. But when their older sister appeared during their debutante, Ephemera left abroad after realizing they were no longer safe in Obelia.

Yet when she returned, her twin was there hanging in the gallows, rotting away.

"Take root, take anything! All of it, eat all the mana I have if it means I can save my sister!"

And so Ephemera woke up, infantile and magicless, but her twin sister sleeping soundly by her side. And she'd be damned if that tyrant killed her again.