Yoshikage Kira (吉良 吉影 Kira Yoshikage) is the main antagonist of Diamond is Unbreakable.

Unnoticed in Morioh for years and undisturbed all his life, Yoshikage Kira is an abnormal and paraphilic serial killer whose routine is shaken when the ghost of his first victim, Reimi Sugimoto, begs the Joestar Group to look for him and he attracts unwanted attention by killing Shigekiyo Yangu. Kira is a Stand User and wields the powerful Killer Queen that has the ability to create deadly bombs.

Kira is also the protagonist of the short spinoff story Dead Man’s Questions.