ONA
Description
Epsilon is the fifth member of the Seven Shadows, a group of elite warriors within the organization Shadow Garden. An elf with sky-blue hair often styled into twin tails, she struggles with a deep insecurity regarding her naturally childish and slender physique. To compensate for what she perceives as a flaw, she uses a specially crafted suit of slime, a magical material taught to her by her master, to create the illusion of a tall, voluptuous figure. This external appearance is a carefully maintained construct, requiring constant concentration and magical control to keep the slime perfectly mimicking the texture, color, and movement of real skin and clothing.

Epsilon was originally a proud and talented noble girl whose world collapsed when she fell victim to demonic possession. Rescued from this fate by Cid Kagenou, she has since become one of his most devoted followers. She believes that his dramatic persona as Shadow is his true self, viewing his ordinary schoolboy life as a mere disguise. Her primary motivation is to become the perfect woman for her master, a goal born from her early realization that her general skills were lacking compared to her fellow Shades. She channeled this insecurity into obsessive training, eventually turning her need to maintain the slime body into an opportunity to master magical control, becoming the most precise magic user among the Seven Shades. While she believes her fabricated beauty attracts Cid, he is actually far more interested in the technical mastery of her slime craftsmanship.

Within Shadow Garden, Epsilon has a complex web of relationships. She deeply respects Alpha, the leader of the Shades, and follows her orders without question. She views Beta as a rival for their master's attention, particularly resenting Beta's naturally generous figure, though Beta remains oblivious to this jealousy. Despite this rivalry, they cooperate effectively on missions. She gets along well enough with the beastkin Delta, but often has to distract her with snacks as Delta can smell the slime Epsilon constantly wears. Her direct subordinates, Chi and Omega, are among the few who know her secret, but they wisely pretend not to notice. In public life, Epsilon assumes the persona of Shiron, a world-famous pianist and composer whose plagiarized musical works were unknowingly taught to her by Cid from his memories of his past life. This identity allows her to move freely in high society, gather intelligence, and provide support for the economic arm of Shadow Garden.

In combat, Epsilon excels due to her incredible precision and control over magic. She wields a scythe made of slime and is capable of firing highly refined, cutting energy projectiles. Her nickname within the organization is The Precise, a testament to her unparalleled skill. She has participated in many major operations, including the infiltration of the Kingdom of Oriana, where she played a key role in the mission to free Princess Rose from the Cult of Diablos's control. Her development from a prideful, insecure girl into a supremely confident and powerful warrior is defined by her ability to turn her deepest insecurities into her greatest strengths, transforming an elaborate lie into a formidable truth.