Full Bloom. A Novel of Identity, Immortality, and the Death No One Notices (en Inglés) - Raphael J Urbain

The procedure is painless. It's FDA-approved. It's covered by most insurance plans. And by the time it's finished, you won't be there to notice.

London, 2034. Two billion people have undergone NovaMind - the neural-implant technology that has, effectively, cured death. The process is gradual and seamless: over eighteen months, synthetic clusters quietly replace biological neurons, one cluster at a time. You go in mortal. You come out forever. Every person who has completed the procedure says they feel exactly like themselves.

Nora Ashworth, a thirty-six-year-old bioethics journalist, has spent her career writing about the technology that promises to end human suffering. Her husband Callum had the procedure fourteen months ago. He is, by every available measure, still the man she married - the same memories, the same kindness, the same terrible puns. So why, in the small unguarded moments, does she catch herself watching him like a stranger?

When a frightened young scientist at Elysian Technologies contacts her with a single phrase - substrate transition mortality - Nora pulls a thread that should not exist. What unspools is a question with no comfortable answer: if the copy is perfect, and the copy is happy, and the copy believes it's you... does it matter that you're dead?

But the truth she uncovers is only the first layer. The second is more intimate. The third is the size of a species.