I originally thought that I had, like others, travelled back in time.

In the end, I discovered that it was only a simple job change.

A job that appears to be rather simple and comfortable on the surface, but in actuality is a job that forces one to have excessive leisure time on hand.

The Messengers; they wander through each and every era in order to prevent wild and solitary spirits from causing trouble in the human realm.

Although it sounds like a great and respectable job, the reason why I was selected amongst the hundreds and thousands of spirits is because of three words – when I was alive, I "knew my place".

Working continuously for 10 years without a job change is an advantage in today's day and age, someone told me in all seriousness.

Because being a Messenger has become the job with the highest quitting rate in the Underworld…