The 28 year old main male protagonist and one of the Enforcers in Unit One. Formerly an Inspector, his involvement in the Specimen Case caused his Crime Coefficient to rapidly increase to abnormal levels. It was revealed that while investigating the case, Sasayama, the Enforcer that worked under Shinya, was on to the mastermind behind the case until he was killed in the same manner as the victims. Instead of seeking the needed therapy, Shinya became so focused on the case that he was demoted to Enforcer by the Sybil System, restricting his freedom and limiting his movement to inside the Public Safety Bureau. He eventually left Unit One to hunt down and kill Makishima alone. He ultimately succeeds, but with Makishima's death the Sibyl System would no longer withdraw Kogami's execution order for his desertion and crime. In the epilogue, it is revealed that he managed to board a ship that was about to leave the country.