There's something quite evil, and maybe a little sad about not wanting someone around so much, and yet repressing all that hatred until it becomes imbued with Mana and gains life to exist independent of you.
When Kaya first returned home and the atmosphere felt stifling, with an aura of unwantedness, she was ready to accept it as normal. It had been normal her whole life.
However, her refined perception picked up on the aura as an entity that could be faced and maybe defeated. She spent the days following her return working on introspection and trying to learn what magic would work best.
It became very obvious early on that the only magic that could help face off this entity was the same magic that had allowed Kaya to sense it at all; Nature Magic.
