Princess Knight Lydia / 姫騎士リディア

There are two princesses in the Altein Empire.
Lydia is the eldest, swordfighter of the dancer knights, under the blessing of goddess Finora.
Furizia is the younger, guardian of the sealed demonworld gate, under the blessing of Tianon.

When their father the king dies of disease, Lydia takes the throne.
"I wish to support my people, like my father...!"
Behind the scenes Korekio, jealous brother of the dead king, helps Altein's enemies
destroy Lydia's army and take the castle...
Furizia is captured in the coup and ravished by orcs.
Korekio can access the demonworld gate... once he breaks Furizia's mind and body.