Idonea, the Mad Alchemist

Mary is a succubus who has trouble controlling her powers. She and her friend Ainsley seek the help of Idonea, the infamous alchemist who made the elixir of life. They want her assistance to help Mary not harm humans whenever she feeds. Idonea listens to their case and becomes fascinated.

But out of the blue, Idonea’s body shrinks, changing into a child. To Mary’s and Ainsley’s surprise, it turns out the elixir of life she created was flawed, so her age fluctuates.

This is part of the New Salem universe.
Drawn by やくぱん