A thirty-year-old hardworking salaryman, Seiichirou Kondou, is suddenly involved in the holy maiden summoning ritual and banished to the parallel world of the Romany Kingdom. Since he spent many years of his life working tirelessly, he has a corporate mindset and even wants a job in this magical world. Seeing this, he gets a job at the Royal Accounting Department.
While rebuilding the department during hectic days, Seiichirou finds a nutritional tonic that erases all his fatigue. This tonic also removes his chronic illness and exhaustion, and fills him with joy. But this world lacks the resistance that makes him exposed to the life-threatening side effects.
To survive, Seiichirou should find someone who has magical powers and is willing to help him adjust his body in this world. With no other option, he trusts Aresh, a calm and brave captain of the Third Royal Order, called Ice Prince.