KYOSUKE HIGUCHI SPOILER!
KH
The greedy, fiercely arrogant director of technology development for the massive Yotsuba Group conglomerate. Handed the notebook blindly as part of Light's high stakes memory concealment strategy, he uses the execution power purely to maximize corporate profits and assassinate business rivals. He represents the complete degradation of Kira's supposed ideological crusade into petty, commercial butcher work, drawing the absolute scrutiny of both L and the task force.
KYOSUKE THROUGH THE ARCHIVE //
DEATH NOTE OWNERSHIP LEDGER //
Open page →Yotsuba Kira · Temporary Owner
The notebook that reaches Kyosuke Higuchi is the same physical Death Note Light originally used as Kira. Higuchi does not know that he is holding a piece of somebody else's long plan. To him, the notebook is an opportunity to kill competitors and pursue Misa without consequence.
Why it matters
The Yotsuba Kira is temporary by design. Light needs another owner to keep Kira active, create evidence of an outside killer and eventually bring the notebook back within reach of the investigation.
Touch → Memory Recovery · Death → Ownership Returns
When Light touches the recovered notebook in the helicopter, his Kira memories return while he remains in contact with it. He then uses the hidden piece inside his watch to kill Higuchi. With Higuchi dead, ownership of the notebook passes back to Light and the restored memories stop being temporary.
What changed
The investigation thinks it has captured Kira's weapon. In the same moment, Kira quietly becomes its owner again. See The Helicopter Memory Recovery & Higuchi's Death.
INVESTIGATION CHRONOLOGY //
Open page →Corporate Kira · The Killings Continue Without Light
Light's relinquishment plan requires Kira to keep existing after Light and Misa lose their memories. Rem passes the notebook into the Yotsuba Group, where Kyosuke Higuchi begins killing for corporate advantage and personal ambition. The new pattern is cruder than Light's and eventually gives L's team something they can pursue.
Why it matters
The Yotsuba Kira is not a detour from Light's plan. He is the temporary owner Light needs so the investigation can prove the wrong version of Light innocent.
Total Amnesia · Sincere Innocence Simulation
With suspicion closing around him, Light gives up ownership of the Death Note while confined. Ownership Relinquishment & Memory Erasure removes his memories of being Kira, so his innocence is no performance. When the killings resume through Yotsuba, the memoryless Light genuinely helps L hunt the new Kira.
Why it worked
Light does not need to fake innocence if he can temporarily become innocent. His earlier self builds a plan that his amnesiac self can unknowingly complete. Light's Yotsuba Plan Works Because His Future Self Does Not Know the Plan.
Notebook Contact · Hidden Watch Fragment
When Light touches the recovered Death Note in the task force helicopter, the memories removed by Ownership Relinquishment & Memory Erasure return. He keeps contact with the notebook long enough to act, uses the Torn Page Functionality hidden inside his watch, and writes Kyosuke Higuchi's name. Higuchi's death returns ownership to Light and makes the restored memories permanent.
What changed
The Yotsuba plan ends with Light exactly where he intended to be: inside the investigation, trusted again, and secretly Kira once more.
