Think Nirvalen

The greatest mage of her time during the "Great War," known as the legendary Octa-Caster. Publicly, she goes by the name "Nina Clive."

She is the ancestor of Feel Nirvalen.

While she usually speaks normally, her original manner of speaking is similar to Feel's. However, her personality is more violent and cruel.

She is one of the few individuals who independently deduced the true nature of the Ex-Machina.

The frequently seen explanatory text about the Ex-Machina, "The Concept We Gained," is a quote from her.

She possesses an extraordinary intellect, surpassing the magical systems lost by Jibril in a single generation.

On the other hand, she has low practical life skills and leaves all chores to Nina Clive.

She has few friends or acquaintances, but she trusts Nina and holds feelings for her beyond friendship, often engaging in playful sexual harassment.