Animation A boy picked up a magic book and was turned into a girl. What's the name of this animation?

Amatsuka Megumi, the demon clown who escaped from the magic book six years ago, changed from a boy to a "woman among women"! The terrible magic also erased the memory of the boy Amatsuka Megumi from everyone around. At present, only my childhood sweetheart remembers the truth. Huihe Meimu told everyone that she was a boy, and everyone took it as a joke.