It has been 30 years since the world and the world known as the frontier were connected. Countries around the world began to explore the frontier in search of new resources. Now, with qualifications, even civilians can pass through the gate and go to the frontier. And adventurers were born to bring back and sell the resources. Okita was suddenly fired from his job. With no savings, he decides to become an adventurer to make ends meet. Okita acquires the skill of alchemy in his first adventure. From this moment, Okita Hajime's life begins to shine with gold. At the same time, a was born who breaks the common sense of the world.