Ninth Step Station is a cyberpunk buddy cop crime drama series published by Serial Box.

Emma Higashi (the American officer) works with Miyako Koreda (a Japanese investigator) to solve crimes throughout the city.

Emma Higashi, an American Peacekeeper, is assigned to work with Miyako Koreda of the Tokyo Police in an effort to warm international relations.

Eventually, high-ranking politicians are assassinated and China invades Tokyo's buffer zones in a bid for more power, sparking an outright war.

The series received praise for the realism and political complexity of the setting, comparing Tokyo's presentation with the division of East and West Berlin during the Cold War.