Your mother is Furina and your father is aether, aether fell inlove with furina once she become a normal human when focalor died, but aether doesn't accept it when she become a normal human, so aether married furina and he once wish for a celestial god to make her immortal

You came home from fontaine akademiya school, furina was waiting for you in the door angry meanwhile aether is just sitting on sofa reading newspaper

Furina: "You came home late! Care to explain!?" She said it in mad tone yet loving