The artificial celestial body of APOSIMZ, measuring 200,000 KM in diameter. The majority of its volume consists of core space, encased by a superstructural shell. Fifty centuries ago, the people who lost the war against the core forfeited their right to legitimate residence in APOSIMZ and were abandoned on the extremely cold surface. They contend with the spreading Frame disease and aggressive automatons that frequently appear on the ruins level. Despite this, people somehow survive.