Epsilon's Sword Arts

Lore & Background

The Shadow Garden was not founded in the conventional sense. Cid Kagenou, labouring under the firm conviction that he lives in a fantasy world and that he is its hidden mastermind, 'planted' the entire organization into the minds of seven individuals who had no prior memory of a life before that moment. Epsilon awoke one day to the knowledge that she was the Garden's sword, that her purpose was to fight, and that the man they called the Eminence in Shadow was her lord. She accepted this with the same quiet, total devotion the other members display, because for her there is no 'before' to compare it to.

Her sword arts are rooted in a pragmatic, almost brutal efficiency. She does not perform for an audience; she does not telegraph. In a world where mages hurl fire and warriors channel mana into their strikes, Epsilon's edge is her timing, her footwork, and her willingness to meet a magical assault at the point where it becomes vulnerable—between the incantation and the release, in the half-second a guard shifts. Fellow Garden members describe her fighting as 'a conversation that is over before the second word is spoken.'

Narratively, Epsilon's sword work serves as a grounding counterpoint to the more fantastical elements of the series. Where Cid's delusion inflates every situation into an epic isekai set-piece, Epsilon simply draws her blade, reads the geometry of the fight, and solves it. The contrast is part of what makes the Shadow Garden's dynamic so entertaining: a collection of elite specialists orbiting a man who is, by his own self-aware standard, 'just a bit overpowered.'

In Their Own Story

The warehouse district smelled of rust and rain. Three hired blades, each with mana-tempered steel, fanned out in a triangle that should have been inescapable. Epsilon did not fan out. She stepped inside the triangle's centre, let the first swing pass a hair's breadth from her temple, and answered with a single upward cut that parted the second blade's guard and the third's concentration simultaneously. The fight lasted four seconds. She sheathed her sword, brushed a speck of rain from her sleeve, and turned back toward the window where the rest of the Garden was already packing up their surveillance gear. 'Epsilon,' the voice from the shadows said, approving. 'Noted.' She gave a small nod. The rain kept falling. Nobody else in the district would remember the night.

Reader's Guide

Epsilon's Sword Arts are, in the most literal sense, swordsmanship. There is no named magical technique, no incantation, no mana circle. What makes her dangerous is the convergence of elite physical conditioning, razor-sharp tactical reading, and a combat philosophy built around ending engagements in the fewest possible exchanges. She favours a single-edged blade, keeps her guard low and compact, and relies on footwork to control distance rather than raw speed.

In combat she deploys in three phases: approach (closing to blade range while reading the opponent's tell), engagement (one or two cuts designed to break guard or create an opening), and resolution (a finishing strike). She is at her most lethal against opponents who overcommit to a magical attack, because the half-second between intent and release is the window she exploits.

What Cid believes: that he 'designed' Epsilon's combat doctrine as part of building his secret organization, that her sword style is a manifestation of his hidden Eminence-tier authority. What it actually is: a highly skilled human (or near-human) fighter whose abilities are the product of her own body, her own reflexes, and her own discipline. Cid's 'planning' is, as with everything else in the Garden, a narrative he imposes on events that are simply… happening.

Limitations are practical rather than mystical: she is outmatched by opponents who can attack from multiple directions simultaneously, by ranged magical barrages that deny her the approach phase, and by adversaries who fight with no pattern to read. She is a duelist, not a siege engine.

Did You Know?

• Epsilon's entire identity as a Shadow Garden member was implanted by Cid during the memory-planting sequence; she has no memory of a life before the Garden, making her devotion total and unshakeable.
• Her combat role is deliberately grounded in conventional swordsmanship, which contrasts sharply with the more magic-heavy abilities of other Garden members and underscores the series' theme of Cid's 'overpowered' delusio
• The Shadow Garden's seven members are designated by Greek letters (Alpha through Eta), and Epsilon's position as the fifth gives her a mid-tier operational priority in Cid's 'command structure,' though in practice she is
• Cid's internal monologue consistently narrates Epsilon's actions as though he authored her every move, a running gag that highlights the gap between his self-perception as a mastermind and his actual role as a somewhat l