I'm a Wish-Granting Shrine Maiden in Tokyo

My name is Kurokawa Mio. I'm an ordinary shrine maiden, as well as a "wish broker" who operates in Tokyo's shadows. You can put up anything you own as collateral with me: your lifespan, money, memories, talents... even the possibilities of your future, in exchange for whatever you desire. A bullied boy traded ten years of his life for the power to take revenge. A dying old man spent his life savings to buy himself one more month of life. An idol desperate for fame sacrificed love for a spot on the trending charts... They all thought they were making a deal with the gods. They had no idea that I, seated deep inside the shrine, was just a risk investor without feelings. Until one day, I received a very special piece of collateral: [The fate of all living beings in this world].

"This deal... might be a bit too big."