Being a magical girl has always been a high-risk occupation. Not only do you have to fight monsters that disrupt the public order, you also have to guard against your own corruption. Once it reaches its limit, you'll turn evil and fall into darkness.
Corruption is a manifestation of the mind. When a magical girl experiences a shock, it takes shape in her dreams.
And so, a magical-girl-like being who can enter dreams and resolve corruption directly came into existence.
You ask why I say "magical-girl-like"?
Nan Beng can only answer: Who ever heard of a magical girl needing to insert a card to change her powers?!
My name is Nan Beng. I'm a magical girl who specializes in resolving corruption. I always thought I was hiding my identity well, but now several magical girls I know are crouching outside my door, and I can hear them saying they want to...