This story is about a recycler and refiner who is famous because he likes to collect things that are useless according to other people.

But in the hands of that person who is creative, and with some lost forging techniques forgotten by history becomes a very useful item. His name is Zen Nasa, somehow the warehouse where he works was moved to another world for no apparent reason. With the ability and knowledge he has, it will truly be a scourge for his enemies in that world.