The 100 Assassins

Lore & Background

The assassin ranking in Sakamoto Days functions less like a corporate leaderboard and more like a living ecosystem. Each number carries weight beyond mere skill: it signals influence, network, and the willingness of other killers to step aside or draw steel. The top positions—single digits, then double digits—command a kind of gravitational pull. Contracts flow toward the highest names. Rivalries crystallize around the gaps between ranks. And the number one slot, historically held by Sakamoto, was treated less as a title and more as a law of nature: the apex predator of a world that operates in the shadows of ordinary Japanese life.

Sakamoto's retirement did not simply remove a name from the list; it destabilized the entire social contract of the Top 100. For years, the hierarchy had a fixed point, a ceiling that everyone acknowledged. Without it, the ranks below began to shift, consolidate, and compete with a ferocity that the old order had suppressed. Shin, the number two, found himself at the top of a world that suddenly had no one above him to answer to—and that position, for a man who defined himself in relation to Sakamoto, proved to be a kind of existential crisis disguised as a promotion.

The broader assassin community, those ranked below the Top 100 or unranked entirely, look upward with a mixture of awe and resentment. The Top 100 set the pace, the prices, and the rules. They are the visible tip of an iceberg whose full depth no one outside the profession will ever know. And in the world of Sakamoto Days, that hidden depth is where the most dangerous stories begin.

In Their Own Story

The rain had been falling for three days when the contract hit the desk. Not a contract in the paper sense—no envelope, no wax seal—just a notification that bloomed on a screen in a back room lit by the blue hum of a server rack. The number two's name pulsed at the top. Below it, a single line: a location, a time, a name that hadn't been spoken aloud in over a decade. The number two set down his tea, watched the steam curl and die, and felt the old familiar weight settle onto his shoulders like a coat he'd never properly hung up. Outside, the convenience store on the corner flickered its fluorescent sign, and somewhere behind that glass, the man who used to outrank him was restocking onigiri and humming a tune he'd half-forgotten. The number two turned back to the screen. He had a choice to make, and the Top 100 had never been kind to those who hesitated.

Reader's Guide

Purpose and function. The Top 100 Assassins is the apex tier of a ranked hierarchy governing the assassin underworld in modern Japan. Its primary function is to establish a clear, if brutal, order: who is the most capable, who commands the most dangerous contracts, and who holds the leverage to shape the rules of engagement. It is less a formal club with a charter and more a living ranking that the community enforces through reputation, violence, and mutual recognition.

Leadership and structure. There is no single elected chair or board. Authority flows from rank. The number one position historically sat with Sakamoto, and his retirement left the hierarchy in a state of flux. Shin, the number two, occupies the de facto top seat but carries the psychological weight of having been defined by the man above him. Below the single digits, the double digits form a middle tier of highly capable operators, and the broader Top 100 extends to those who are dangerous, connected, and significant enough to be named.

Membership and resources. Entry into the Top 100 is earned through demonstrated skill, high-profile contracts, and the respect (or fear) of peers. There is no application process. Resources—intel, safe houses, specialized equipment, financial backing—flow through networks that are as old as the profession itself. The higher your rank, the deeper your access.

Relationship to Sakamoto and the central conflict. Sakamoto's retirement is the inciting wound. By removing the fixed point of the hierarchy, he set the Top 100 in motion. Those below him push upward. Alliances fracture. And Ganta, his son, is dragged into the orbit of this world not by ambition but by proximity and love. The Top 100 is the engine of escalation: every new threat, every contract, every rivalry traces back to the vacuum left by the man who chose a convenience store over a throne.

Did You Know?

• Sakamoto's decision to retire from the #1 assassin position is the single event that destabilizes the entire Top 100 hierarchy and sets the main plot in motion.
• Shin, the #2 assassin, is one of the most prominent active members of the ranking and serves as a major recurring figure in the story.
• The ranking system operates in a world that coexists with ordinary modern Japanese life—convenience stores, schools, and daily commutes—making the assassin underworld a hidden layer beneath the mundane.
• Sakamoto's post-retirement life behind the counter of a small convenience store is a deliberate, almost absurd contrast to his former status as the most feared name in the Top 100.