What is the meaning of life? This is a question that the four of them have been thinking about since childhood.
As long as they can remember, they have been training in the system space, transforming their bodies, and facing the cold mechanical hands and alloy walls day and night.
They are the most famous mission team in the system space. They are the team that climbed to the top step by step amidst countless blood and scars. They will never forget what they have done in the past, and they will always maintain this original intention.
Their story has just begun...
Purpose: You are each other's strongest backing