AIBOU: Tokyo Detective Duo (2002)

S2E4 Before I Die

A police officer named Nielsen discovers he has a terminal illness and decides to take matters into his own hands. With only limited time left, he targets a notorious racketeer, Danton, who has eluded him for the past year and a half. Determined to bring him down, Nielsen embarks on a mission fueled by desperation and vengeance.