Leah is the guardian of the magical world, in charge of watching over the World Tree and the purification of monsters.
[In reality, the present "Leah" is actually [Benji)(https://anilist.co/character/363159) disguising as her. Leah was the first magical girl, who lost her life fighting against the monsters. Benji was her magical companion, and since her death, he has been hell-bent on his plan to resurrect her by using the souls of the other magical girls and their companions.]
