Since I was reincarnated as a poor farmer in another world, I decided to lay bricks and build a castle

A child was born in the world of swords and magic.A boy with a memory in Japan, which is a different world from that world.However, he was born as a child of a poor farmer.A boy who witnesses the harsh reality is forced into a situation where he can not say slow life.The hungry boy used his favorite earth magic to start his activity to fill his hungry stomach.