Red Hammer

The Red hammer is said to be the greatest engineering type builder, having all is work sought after by many.

It is estimated by Kamo Aoi that just a small weapon can cost up to 200 million won. Few users can obtain them and are usually very powerful.

One such user is Jung Shi-Ah who states it himself, to have multiple of Red hammer's weapons including a rifle shown at the beginning of the series. As the man tended to create many weird things.

This particular rifle was designed to keep a player dreaming even with receiving an injury from it.