Yoshikage Kira is a primary antagonist in the 'Diamond is Unbreakable' arc of 'JoJo no Kimyou na Bouken' (JoJo's Bizarre Adventure). A seemingly ordinary office worker, Kira harbors a dark secret as a serial killer with a hand fetish. His Stand, Killer Queen, allows him to turn anything it touches into a bomb. Kira is a meticulous man who desires a quiet life, but his sinister urges and deadly abilities make him a dangerous adversary for Josuke Higashikata and his allies. The character embodies themes of duality and hidden malice, challenging the protagonists with his cunning and ruthlessness.