
Kosaku Kawajiri
Also known as: Kosaku
Kosaku Kawajiri is the Morioh salaryman whose identity Yoshikage Kira assumes across Diamond Is Unbreakable's final act. Husband of Shinobu and father of Hayato, Kosaku is murdered by Kira early in the late-arc identity-assumption sequence, and Kira subsequently undergoes surgical face-alteration to match Kosaku's appearance for the rest of the arc.
Story
Diamond Is Unbreakable
Part 4 · 1962–1999Kosaku's pre-arc biography is depicted across one chapter as a Morioh-based salaryman with no Stand-user pedigree and a cold marriage to Shinobu Kawajiri. He is murdered by Yoshikage Kira at the start of the arc's identity-assumption sequence — Kira surgically alters his own face to match Kosaku's, moves into the Kawajiri household, and assumes Kosaku's identity across the rest of Diamond Is Unbreakable.
Powers & Abilities
Non-Stand-User
OtherKosaku is not a Stand User. He is structurally an institutionally-invisible salaryman whose identity Kira targets specifically because of the institutional-invisibility — Kosaku's death and identity-replacement are not noticed by the broader Morioh community.
Relationships
Trivia
- Kosaku is the Morioh salaryman whose identity Yoshikage Kira assumes across Diamond Is Unbreakable's final act — the structural argument that Kira's identity-concealment campaign targets institutionally-invisible characters whose deaths produce no broader investigation.
- He is murdered by Kira at the start of the arc's identity-assumption sequence; Kira's surgical face-alteration matches Kosaku's appearance for the rest of the arc.
Frequently Asked Questions
Who is Kosaku Kawajiri?
Kosaku Kawajiri is the Morioh salaryman whose identity Yoshikage Kira assumes across Diamond Is Unbreakable's final act. Husband of Shinobu and father of Hayato, Kosaku is murdered by Kira early in the late-arc identity-assumption sequence.
How does Kosaku die?
Kosaku is murdered by Yoshikage Kira at the start of the arc's identity-assumption sequence. Kira then surgically alters his own face to match Kosaku's appearance and assumes the dead salaryman's identity for the rest of Diamond Is Unbreakable.





