Eno

Eno (エノ) is a side character of the Slime Taoshite 300-nen, Shiranai Uchi ni Level Max ni Nattemashita series. She is known as the Witch of the Grotto and is an immortal witch just like Azusa.

Plot
She Appears when news of the Witch of the Highlands helping people reached Azusa who was working at Halkara's factory at that time. They then track her down to the north where they see her as an old woman, They declare that she is a fake and after that she runs away back to her house where they then proceed to follow her and discover what she does like brewing potions and making items with various effects using various ingredients.