一位少女独居在山中的独户小屋里，坚强而努力地度过每一天的“悠闲”故事。

If you have enough money, you can buy anything. So why wait for an organ you need to become available? Raised to be harvested for parts, Ray had already lost her eyes when renegade surgeon Black Jack rescued her. Now, ten years later, she has grown up to be a surgeon herself. And thanks to the unique artificial eyes she received as replacements, she has a reputation for performing incredible medical operations that no one else could even attempt. But unknown to any but a select few, her surgical endeavors are only part of a greater mission: to discover what happened to the other children she was raised with, and to find the men who stole the eyes she was born with and to bring them to justice.

Ryou Mizuhara is a normal high school student, living alone with his younger sister Akane. They were very happy together, at least until a mysterious girl crashes into their lives who introduces herself as Ryou's new fiancée.

The year is 1939 - it was then that the Neuroi appeared. Nobody knows where they came from or what their ultimate agenda is, but the fact remains that their attacks drove people out of their towns and cities. In order to take arms against them, humanity develops a new anti-Neuroi weapon called the "Striker Unit." Using the power of magic to fight against the monsters, this new device enhances and amplifies the power of female magic-wielders. To use this device, young witches from all over the world have been brought together to form an elite task force unit called the 501st Joint Fighter Wing, commonly known as the "Strike Witches."