DEATH NOTEのネタバレ解説Death Note: the story explained

Synopsis

Light Yagami is a top student and the son of a senior police official. Convinced the world is rotten, he finds a black notebook lying in the schoolyard one day - the cover reads 'Death Note,' and inside are instructions for its use. Anyone whose name is written in it dies, but only if the writer holds their face in mind. Write a cause of death and it happens that way; leave it blank and the person dies of a heart attack. Skeptical at first, Light tests it and learns it's real. A death god named Ryuk, who dropped the notebook, then appears and tells him that whoever picks up a fallen Death Note now owns it. Light decides he will judge criminals and become the god of a new world, pulling names from news reports and police databases and writing them down one by one. As violent criminals start dying of unexplained heart attacks, the world begins calling this unseen executioner Kira. An international task force hands the investigation to a detective known only as L, who never reveals his face or real name. Within a short time, L works out that inside police information is being used and, from the distribution of the killings' timing, narrows the culprit's location to the Kanto region of Japan, landing the first real blow on Light with a faked broadcast shown only within Japan. Under this lopsided condition - whoever learns the other's face and real name first wins, whoever's face and name are learned first loses - Light and L eventually end up seated side by side on the same task force, each trying to prove the other is exactly who he's hunting. Then a second person claiming to be Kira appears, and the whole board starts moving again.

How the story is built

1. Setup

   The night he found it, and the trap of a name

   Volumes 1-3, first half of Part One

   The Death Note's rules are laid out to the reader in full right at the start: write a name and the person dies; it doesn't work without knowing their face; cause and circumstances of death can be specified. That full disclosure means everything that follows isn't a contest of hidden powers - it's a battle over how to use rules both sides, and the reader, already understand, and how well each side can read the other's next move. Light begins purging criminals, and the public names this phenomenon Kira. L deduces that inside police information is being used, and from a bias in the timing of the killings, that the culprit is in the Kanto region of Japan; he flushes Light out with a fake broadcast shown only within Japan. Light takes the bait and falls into the trap, unwittingly confirming to L that he's in Kanto. What's established here is that this story's real battlefield is information leaks, not brute force. From this point, Light goes on to eliminate the FBI agents sent to investigate him, along with Naomi Misora, one agent's fiancee - showing he has no hesitation about killing people who aren't criminals at all.

2. Development

   A gamble on losing his own memory

   Volumes 4-7, the Second Kira arc and the Yotsuba arc

   A second self-proclaimed Kira, Misa Amane, appears. She has traded half her remaining lifespan for a death god's Eyes, which let her learn a person's name and remaining lifespan just by looking at their face. With an ally now able to identify names, the balance tips against Light, who until now had been the one whose name couldn't be learned. L detains Misa, and Light, to clear his own name, volunteers to be detained too. That's when Light makes his move: he gives up ownership of the notebook, which erases his memory of ever having it. Having relinquished it, Light genuinely believes he isn't Kira and joins the investigation in good faith. Meanwhile, the notebook passes to executives at the Yotsuba Group, and a third Kira begins killing people singled out in corporate meetings as inconvenient. With the man who had been the killer now working as a detective, the story creates, just this once, a stretch of time in which Light and L are truly cooperating. Once the Yotsuba case is resolved, Light touches the notebook again and his memory returns.

3. Turn

   L's death, and five years later

   Volumes 7-10, first half of Part Two

   To protect Misa Amane, the death god Rem writes the names of L and his aide Watari; both die of heart attacks. A death-god rule states that any death god who kills a human to extend that human's lifespan will itself die, and Rem is erased as a result. The events here are placed on November 5, 2004. This is the story's biggest reversal. The pursuer's central figure exits, and Light, taking the name 'L' as his successor, ends up at the head of the task force himself. Five years later, two successors raised at Wammy's House, the orphanage where L grew up, appear: Near and Mello. Near sets up an American anti-Kira task force called the SPK, while Mello moves independently through connections to the mafia. The story reshapes itself from a one-on-one between Light and L into a three-way struggle among Light, Near, and Mello. Mello kidnaps Light's sister to steal a Death Note, and in the course of that pursuit, Light's father Soichiro Yagami is shot by the mafia and dies - never learning that his own son is Kira.

4. Resolution

   A proxy, and a warehouse

   Volumes 10-12, second half of Part Two

   Light stops writing names himself, installing a prosecutor named Teru Mikami as his proxy. Mikami worships Kira as a god and carries out the killings without ever learning Light's face. As a go-between, Light uses Kiyomi Takada, a TV newscaster and an old university acquaintance, as Kira's public spokesperson. Mello abducts Takada, but Takada kills him with a torn-off scrap of notebook page before Light burns her to death with his own notebook, leaving Mikami as Light's only remaining piece on the board. Near keeps close watch on Mikami's actions and, in secret, alters the notebook Mikami is using. The showdown is set in a warehouse. Light's plan is to have Mikami write down the names of Near and every member of the task force who shows up there, killing them all while he alone survives. Whether that final move actually works is where everything comes down to.

The ending

Notes