Ssosia is the daughter of the Demon King Pedonar and the creator of the system that controls Fantasia. She allied with the First Angel in order to stop her father but was later betrayed and became a prisoner in her world.
FFF-Class Trashero (Manhwa)
After being summoned to Fantasia, Hansoo Kang spends a grueling ten years and finally defeats the lord of demons. He's happy and assumes he'll be returning to his own world, when unexpectedly the god of the world gives him a report card.
