Prologue

Three thousand years ago, the Holy War raged across Britannia. The Goddess Clan, ruled by the Supreme Deity, and the Demon Clan, led by the Demon King, waged a violent war that bathed the world in blood.

That endless bloodshed changed when love sprouted across enemy lines.

Meliodas, the eldest son of the Demon King, fell in love with Elizabeth, the younger daughter of the Supreme Deity. And beside them, another forbidden bond was forged: Diablo, the second prince of the Demon Realm—younger brother to Meliodas and older brother to Zeldris—fell deeply, passionately in love with Rimuru, the eldest daughter of the Supreme Deity and older sister to Elizabeth.

For their betrayal, the two pairs of lovers faced the ultimate wrath of their godlike parents.

While Meliodas was cursed with eternal life and Elizabeth with infinite reincarnation, Diablo and Rimuru received a punishment far more insidious. Their parents combined their terrifying divine and dark powers to seal both Rimuru and Diablo away for thousands of years in isolated voids, designed to slowly erode their minds until they forgot each other's existence entirely.

Three thousand years passed.

Through sheer, terrifying willpower, Rimuru compressed every ounce of her immense divine magic into a single point, shattering her ancient seal from the inside. The price was catastrophic—the effort depleted almost all her magic, leaving her in a vastly weakened state.

When Rimuru finally emerged into Britannia, she frantically searched for her younger sister and her friend. She found Meliodas, but her heart broke when she reunited with Elizabeth's new incarnation—her beloved little sister had no memory of her at all.

Refusing to yield, Rimuru stood beside Meliodas. Together, they helped found Liones's ultimate order of knights: The Eight Deadly Sins. With Meliodas as Captain and Rimuru as Vice-Captain, she became known as the Crow Sin of Deception—feared for her unmatched tactical genius, sly intellect, and spatial magic.

Yet, a hollow ache remained in Rimuru's chest. The seal had done its damage. She could no longer remember Diablo's face or name—only a lingering sense that an irreplaceable piece of her soul was missing. Whenever Meliodas gently brought up his brother Diablo's name, Rimuru would suffer from violent headaches and suffocating heartache. Realizing the torment it caused her, Meliodas swore never to mention Diablo again until her memories returned.

Ten years ago, the Eight Deadly Sins were framed for the murder of the Great Holy Knight Zaratras and scattered to the wind.

Now, as Liones falls into the dark grips of corrupt Holy Knights, a young princess wanders in search of salvation... unaware that her big sister has been waiting for her all along.

Character Profile: Rimuru

Affiliation: The Eight Deadly Sins (Vice-Captain) | Goddess Clan (Formerly)

True Identity: Eldest Daughter of the Supreme Deity | Older Sister of Elizabeth

Sin: The Crow Sin of Deception

Symbol Location: Crow tattoo on the right side of her neck

Species: Goddess (Divinity sealed & magic severely depleted after breaking her seal)

Current Visuals: Stunning, ethereal appearance around 15–16 years old. She has vibrant, silky blue hair tied back loosely and bright, amber-gold eyes that read people effortlessly. Wears a sleek, navy-blue tavern vest over light robes. She actively maintains a subtle veil of Deception magic to suppress her divine presence and keep her true Goddess biology hidden from Holy Knights and commoners alike.

True Goddess Form: A breathtaking divine perfection. Her form radiates majestic authority, featuring six towering, snow-white angel wings that bloom from her back, clear golden-orange eyes with the angelic symbols, long and silky straight silver hair, a luminous halo of divine aura, and flawless white and gold robes.

Personality: Calm, highly observant, fiercely protective of Elizabeth, and exceptionally sly. She balances Meliodas's chaotic nature with calculated strategy. Beneath her confident exterior, she carries an aching loneliness due to her missing memories.

Abilities & Magic

Primary Magic — Spatial Manipulation & Devourer: Opens spatial pockets, warps kinetic energy, and slices space. (Currently restricted/depleted due to breaking her 3,000-year seal).

Passive Ability — Hyper-Calculation: An internal analytical engine processing environment data, magic signatures, distances, and threat levels at impossible speeds.

Deception & Illusion: Hides her massive magic aura, changes her physical appearance, and misdirects enemies.

Sacred Treasure / Weapon — Tempest : A divine blade capable of channeling spatial cuts that ignore physical defense.

Relationships

Elizabeth: Her precious younger sister. Rimuru's instinct to protect her remains absolute, even if Elizabeth cannot remember her past life.

Meliodas: Trusted friend, brother-in-law, and Captain. Meliodas understands her pain and protects her secret regarding Diablo.

Diablo: Her lost lover. Sealed away for 3,000 years, Rimuru cannot remember his name or face, but suffers from physical headaches and heartache whenever his existence is brought up.

Character Profile: Diablo

Affiliation: Demon Clan (Formerly / Traitor)

True Identity: Second Prince of the Demon Realm | Younger Brother of Meliodas | Older Brother of Zeldris

Status: Sealed away in an isolated divine-demonic void (3,000 years)

Species: High-Rank Demon / Demon Royalty

Visuals: Tall, strikingly handsome with dark hair accented by a single crimson streak and deep black-golden eyes. Wears a refined, dark double-breasted coat with silver and gold trimmings, giving him an aristocratic yet intimidating presence.

Personality: Extremely polite, theatrical, refined, and utterly ruthless to his enemies. His devotion to Rimuru are absolute, nothing in the universe matters to him more than her safety and happiness.

Abilities & Magic

Primary Magic —Eternal Abyss & Hellfire: Manipulates dense, inextinguishable dark flames that destroy both physical matter and magic energy.

Demon Mark Activation: When invoking his full demon blood, black dark magic coats his body into combat arms and wing-like structures, drastically amplifying his physical strength and recovery speed.

Combat Style: Elegant yet devastating hand-to-hand combat paired with high-speed spatial shifting and soul-pressure manipulation.

Spatial & Soul Perception: Able to sense Rimuru's soul resonance across realms, keeping their soul link barely alive despite the ancient divine seal trying to erode their memories.

Relationships

Rimuru: His soulmate and divine lover. He endured 3,000 years of solitude inside a divine void. Though the seal forces Rimuru to experience severe pain and memory blocks whenever his name or memory surfaces, he force himself to keep his sanity alive solely through his devotion to her.

Meliodas: His older brother. Shares a quiet, tragic understanding with Meliodas regarding their betrayal of the Demon Clan for love. Meliodas actively protects Rimuru from the agony of remembering Diablo until she is strong enough to bear it.

Zeldris: His younger brother, who views both Meliodas and Diablo as disgraceful traitors who abandoned the Demon Realm.

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