Chi.: Chikyuu no Undou ni Tsuite  

About the Movement of the Earth, チ。―地球の運動について―, Orb: On the Movements of the Earth, Chi.: Chikyuu no Undou ni Tsuite, Chi: About the Movement of the Earth, チ。-地球の運動について-, สุริยะปราชญ์ ทฤษฎีสีเลือด

In 15th century poland, individuals who held unorthodox beliefs were often punished by being burned alive. despite this, rafal was encouraged to pursue theology at university, which was considered the most crucial subject during that era. however, one day he encountered a mysterious person and began investigating a possible "truth" amidst controversial concepts.