A hardworking salaryman close to his thirties, Seiichirou Kondou, is suddenly summoned into the holy maiden ritual and sent to the parallel world of the Romany Kingdom. After spending years working, he has a corporate mindset and is asking for a job in this world. So he starts working in the Royal Accounting Department.
During a busy time working to rebuild the accounting office, Seiichirou discovers a nutritional tonic that removes his fatigue. This tonic treats his long-term illness and erases exhaustion. Because this world has no resistance, its side effects become dangerous and life-threatening.
The only way to survive is to rely on someone with magical powers, who helps his body adjust to this world. So he entrusts Aresh, a skilled captain of the Third Royal Order, who is known as the Ice Prince.
