SF8: Joan's Galaxy Episode 1

In a world covered in fine dust, people who receive an antibody vaccine at birth live to be 100 years old and are called Cs. Those who can’t afford it live to be 30 years old and are called Ns. Yi Oh spends her entire life thinking she is a C but finds out that she never got the vaccine. She becomes curious about the lives of Ns and especially about the only N at school, Joan. (Source: Kocowa)