Chtholly Nota Seniorious

A leprechaun. Her race is also one of those called Markless.

Currently the oldest fairy, and also the strongest wielding the sword of the Regal Braves, Seniolis.

Although deceased, Chtholly's soul lives on in a newborn baby at the end of the anime, Episode 12. Though her soul may live on in another body, her memories of everyone and everything from her previous life as Chtholly, including her love for Willem is gone forever.