Serfs? Servants? Wow, this guy is from the dark ages. "I see. So it suits your needs. What do you mean by not requiring much in the way of life support? Do you have decreased oxygen requirements?"

Zouichi blinked at the question. How to answer?

"It has... in fact, we established a colony on Mars a few centuries ago. However, the entire colony was destroyed by a virus of human manufacture. Supposedly, there's not a single person left alive there. There was an expedition to Mars shortly before I was brought here, though."