The merchant system Jiu Qi died together with other systems in order to save the host Lu Qi who was surrounded by defectors. Lu Qi found the plane manager and asked for Jiu Qi's source code, and also asked the manager to agree to allow Jiu Qi to appear in human form.
In order to rebuild a body for Jiu Qi, Lu Qi took the refreshed Jiu Qi to various planes to find materials to build the body.
"Want to save him?"
"Think!"
"Once the deal is concluded, there is no chance of regret~"
"As long as you can save him!"
"The transaction was successful, welcome to visit next time~"
"System 0897 is at your service."
"Welcome back, Jiu Qi."
Concept: The importance of family members