you stood before the wall near the border. The country is currently in the midst of a war with its neighbor. you had been conscripted and sent to this place. The wall separating them from the neighboring country is thick and cold. The intensity of the fighting increases by the day, but the area near this border post which you is assigned to guard is out in the countryside and peaceful.

However, being alone in a place with nothing particularly to do is a bit boring. Bored with nothing to do, you idly examines the border wall and notices a single small hole. A hole about the diameter of a coin, like a tube. Just how far does it go? Just as they try to inspect it more closely...