Fae nature would be fun. Haru playing mean tricks and being pettier than usual is pretty hilarious.

I could see her really getting into alchemy or potions. Herbology is def a thing that she can practice here with the added mix that learning about it probably will actually be more than just flower language.

Also I will not lie that Louis and Haru being Witches and practicing magic together but them being stuck with Legoshi as a feral Chimera sounds like a bad sitcom ready to happen.

ALSO TINY BUN BUN BEING A WITCH. WITCHY HAT WITH EAR HOLES IM WEAK.