With Tsunemori's assistance, Kogami learns that Makishima killed Sasayama. Kogami and Tsunemori arrest Makishima, whose goal is to disable the Sibyl System. Makishima escapes and Kogami leaves his team, an illegal act, to give chase and to kill the man on his own. With the help of his mentor, Joji Saiga, Kogami kills Makishima before the latter is able to commit an act of bio-terrorism, after which the Sibyl System orders Tsunemori to capture Makishima alive and for Kogami to be executed as a runaway criminal. Kogami escapes and is last seen in a ship reading a book. In the After Stories audio drama, Kogami contacts Tsunemori, telling her that he is withdrawing from society in order to avoid detection.
