Serving in the Current Bureau

The Historical, Cultural and Modern Exchange Secrecy Bureau, a mysterious international organization, selects task executors according to unique rules. The selected people will travel through time and space to complete difficult tasks with their own lives, find out the historical truth, restore historical figures, use the past to educate the present, and give modern people touching stories in a different time and space where life and death are desperate. When the changes in space and time finally stabilize and the number of completed tasks reaches the upper limit of the system, congratulations, you can retire honorably from the Adventure Bureau. But at that time, do you still want to retire?