Kyousuke Higuchi emerges as the third wielder of the Kira mantle, adopting the alias "Yotsuba Kira" following his acquisition of a Death Note from the shinigami Rem. Selected for his greed, ambition, and readiness to harness the notebook’s power for corporate advancement, he becomes a pawn in Light Yagami’s scheme to shift suspicion away from himself. As Yotsuba Corporation’s Technology Development department head, Higuchi orchestrates the elimination of competitors through weekly strategy sessions with fellow executives, cementing the conglomerate’s market dominance through calculated killings. A graduate of Hatsuegi University’s political science program and a fifth-dan kendo practitioner, Higuchi balances intellectual acuity with martial discipline. His prior demotion within Yotsuba, triggered by unchecked arrogance and impulsivity, contrasts sharply with his privileged upbringing as the son of Yotsuba Heavy Industries’ president—a background that fuels his ruthless pursuit of status. To streamline his operations, Higuchi trades half his lifespan for the Shinigami Eyes, enabling swift target identification. This tactical edge is undermined by his overconfidence, leaving him vulnerable to manipulation by Light and the Task Force. A televised trap involving Matsuda provokes Higuchi into revealing his Eyes during surveillance, sparking a chase that culminates in his capture. Aizawa intercepts his attempt to kill Matsuda, while Watari prevents his suicide. Higuchi’s arrest exposes the Death Note’s existence, allowing Light to reclaim his memories and execute him with a hidden notebook fragment. In *Death Note Relight: Visions of a God*, Higuchi’s arc mirrors the original series, condensed for brevity. The film alters Reiji Namikawa’s death to a post-funeral car accident orchestrated by Light, diverging from the anime’s heart attack depiction. A added scene shows Light contemplating Higuchi’s fate at L’s grave, underscoring themes of legacy. Alternate adaptations like *Death Note: The Last Name* substitute Higuchi with Kiyomi Takada, while the 2015 TV drama faithfully adapts his ambition-driven rise and fall.