Switch  

Замыкание, Подмяна, スイッチ

In Japan's Narcotic Control Department, Haru and Kai, both newcomers to the field, face challenges from drug dealers, gangs, murderers, psychopaths, mysterious organizations, and other unstable individuals. Despite his gentle demeanor, Kai struggles with internal turmoil that causes him to transform into a deadly killing machine in certain situations. His behavior shifts like a "switch." As they work together, the mystery behind Kai's strange actions and true identity is gradually uncovered.