Switch

At the Narcotic Control Department in Japan, Haru and Kai are rookie detectives tasked with taking down drug dealers, gangs, and other dangerous individuals. Kai, who appears gentle and caring, has a mysterious condition that causes him to transform into a deadly killing machine in high-pressure situations, earning him the nickname "switch." As Haru and Kai work together to solve cases, they uncover clues about Kai's past and the reason behind his unpredictable behavior.