Shira (シーラ, Shīra) often translated as Sheila). The late queen of the Sun Kingdom and Livius's mother. She passed away three years prior to the beginning of the story. Despite her deceased status, Sheila is often seen in flashbacks.
Sheila is Livius's mother and was the former Queen of the Sun Kingdom. She was assassinated three years prior. She was the daughter of a small tribe and lived an isolated life in the palace with her son until her death. Her death motivated Livius to conquer the world.