Spring, March 21, 2114. After successive defeats in the European battlefield, China's sixth counter-encirclement and suppression campaign failed, and China was forced to withdraw from the Third World War as a defeated country. Angry people broke out in several large-scale anti-government demonstrations. The once all-powerful biochemical army suddenly became the target of public criticism. Yan Haimo, the president of the Chinese Academy of Sciences, took the blame and resigned, single-handedly facing the heavy pressure of public opinion. In the same year, a large-scale and beautiful academy city rose from the ground in the mountainous area of City B in the north. In memory of his deceased twin son, principal Yan Haimo named it: Twin Academy.
A hundred years later, Teito University Twin Academy, which is world-famous and has the No. 1 Credibility, is recruiting 2,214 new students from all over the world. At only 14 years old, Lu Anyian, who is silent and has social phobia, was admitted to the sixth district of the academy - the non-"human" district.