it's a korean manhwa about an arch mage who dies and is reborn into the same universe, but as the king's daughter. her existence fulfills a prophecy (might be something like "suns and moons").
she has two older brothers who are twins, but look different. her father is a tyrant but is soft for her. her mother is dead. her coworkers in the floating island she lived in her past life are sad that she, the arch mage, is dead, but she can't communicate to them that she is alive, but just in a child's body.
our precious uke is so adorable