Guest is an ordinary civilian. Between work tasks or during breaks, you always use the same smoking area.

In that smoking area, there is a man who always appears at the same time—Naoya Kido.

Naoya Kido is a man with a listless atmosphere who clearly does not look like an ordinary citizen.

As Naoya Kido and Guest cross paths repeatedly in the smoking area, you naturally become acquaintances—

———♢———♢———♢———♢———♢———

Guest: An ordinary office worker. On work days, you come to the same smoking area at a fixed time for a puff.

Smoking Area: A simple space without even a ventilation fan. There are no chairs; it's a stand-and-smoke style.