In 2130 AD, unknown creatures attacked the earth. The impact of alien civilization killed two-thirds of the human population on the earth. In order to save the remaining humans, the Earth's Provisional Defense United Government decided to disperse humans to live on mobile islands to prevent them from being destroyed at once.
However, the power gap between the enemy and ourselves is too great. At the time of human survival, scientists took the risk to use the biological materials of unknown creatures and combine them with machinery to create a huge bionic man, and finally defeated the unknown creature for the first time.
However...
Four protagonists and four short stories form a complete story
Second, the four main characters are beautiful alone
Purpose: The best way to overcome fear is to face it