Slave Princess Knight Leila

The country was a small, prosperous, peaceful place until one day it was suddenly conquered by barbarians.

The kingdom's princess knight Leila, her sister the wizard Miori, and her brother Charles, a military strategist, attempted to resist the barbarian leader, but they were powerless against his mighty power.
They tried to resist the chief of the barbarians, but they were powerless against his mighty power.

The chief of the barbarians, with an unfathomable plan, instructs the three to go into dungeons in various parts of the kingdom.

The girls also fight assassins from the empire that borders their kingdom,
The three women must fight against the barbarians' terrible plans, and struggle to prevent the barbarians from coming to power.

They gather with their friends in battle.
With their help, they aim to overthrow the barbarians. ......

--Will Leila and her friends be able to defeat the evil ambitions of the chief of the barbarians?