The final boss in the original novel. Being the illegitimate child of Count Green, she was subjected to a miserable childhood. However, unbeknownst to anyone, she carried a great talent for magic, which would earn her renown as a great mage. For unknown reasons, the author one day wakes up as her.

Spoiler

Following events in the capital, she officially became Abel Heylon's adopted daughter and heir, becoming Fiona Heylon.