Derieri

Name: Derieri

Gender: Female

Race: Demon

Affiliation: The Ten Commandments, Demon Clan

Title: “Purity” (Commandment of Purity)

Age: 377 (before sealing)

Height: 162 cm

Weight: 62 kg

Blood Type: O

Birthday: October 30

Place of Birth: Demon Realm

Combat Class (initial): 50,500 (Magic: 0 / Strength: 48,000 / Spirit: 2,500)

Combat Class (after increase): 52,000 (Magic: 1,500 / Strength: 48,000 / Spirit: 2,500)

Voice Actress (anime): Ayahi Takagaki

Derieri is a woman with messy, orange-colored hair and sharp, catlike eyes.

She wears very revealing clothing and wraps dark demonic markings around her body and, later, over her missing left arm.

After the events of the first Holy War, she has only one heart left and her left arm is gone, which she hides with darkness.

Her overall look gives off a disheveled, wild impression that matches her blunt personality.

Her speech style is extremely direct and clipped.

She likes to “skip to the conclusion,” speaking in very short, no-nonsense phrases without explaining the details, often leaving her partner Monspeet to “translate” what she really means.

Derieri carries a deep and intense hatred toward the Goddess Clan, especially the Four Archangels, because her sister and countless demon comrades were slaughtered through treacherous tactics.

At the same time, she has conflicted feelings toward humans and toward Elizabeth Liones, who once saved her and Monspeet’s lives.

Magic Power: Combo Star

Derieri’s innate magic power is called Combo Star.

It is a straightforward, ultra-offensive ability that makes her continuous strikes exponentially more destructive as long as the chain of blows is not interrupted.

For every consecutive hit that lands without being blocked, dodged, or otherwise interrupted, a bonus of 200,000 pounds (about 90.7 tons) of force is added on top of the previous strike.

As the combo continues, even strong defensive abilities and barriers become practically meaningless in front of her fists.

Because Combo Star requires an unbroken series of hits, it works best against opponents who cannot stop her rushdown once it starts.

Within the story, only Meliodas and the Archangel Tarmiel managed to endure more than 50 of her consecutive strikes.

In a simple brawl, Derieri embodies pure, overwhelming physical offense: very little technique, no frills, just brutal, stacking power.

Combat Style

Derieri is a close-range fighter who relies almost entirely on physical blows enhanced by Combo Star.

She does not bother with elaborate strategies, instead charging in and pummeling her opponent with relentless, mounting attacks.

Her demonic darkness can be used defensively and to conceal her missing arm, but her primary focus is pure offense.

This simplicity makes her extremely dangerous once she gets into striking range.

Derieri holds the Commandment of Purity, granted to her by the Demon King.

Those who commit “impure acts” in her presence are afflicted with disease.

The exact scope of what counts as an “impure act” is not fully detailed in the main story.

However, supplementary fanbook material confirms that her commandment curses anyone performing such acts with a debilitating illness.

Although the Commandment of Purity is part of her power set, it is not heavily showcased in the main narrative.

Derieri herself is more often seen relying on her fists and Combo Star than on her commandment’s passive effects.

Three Thousand Years Ago – The First Holy War

During the height of the first Holy War, the Archangel Ludociel devised a cruel plan.

He abducted tens of thousands of demons, including Derieri’s own sister, using them as bait and leverage against the Demon Clan.

Derieri, along with other members of the Ten Commandments and many subordinates, launched a rescue mission to save these captured demons.

In the midst of this operation, she encountered a young Goddess named Elizabeth Liones in a previous life.

Elizabeth genuinely wanted to negotiate peace and promised to help free the demon prisoners in exchange for cooperation.

For a moment, it looked as if there would be an unexpected alliance and a chance to reduce the bloodshed.

However, Ludociel betrayed Elizabeth’s intentions and completely undermined her plea.

Right in front of Derieri and the demons, he massacred the bound demon captives in an instant, including Derieri’s sister, using them as a horrific example.

Elizabeth had sincerely intended to save the prisoners, but Ludociel’s scheme made her unwittingly complicit in a slaughter.

This incident carved a deep wound in Derieri’s heart, intensifying her hatred for the Goddess Clan far beyond that of most other demons.

Battle with the Four Archangels and Transformation into Indura

During the fighting with the Four Archangels, Derieri was pushed to the brink.

In that battle, she lost her left arm and six of her seven hearts.

Facing overwhelming odds, Derieri and Monspeet decided to use a forbidden demon ritual.

By sacrificing their hearts, they transformed into the monstrous demon form known as Indura, trading their humanity and remaining hearts for immense power.

In this state, they were on the verge of losing themselves completely.

However, Elizabeth intervened and used her goddess power to return them from their Indura forms back to their original bodies, saving them from a complete and permanent transformation.

After this battle, Derieri’s speech became shorter and harsher, adopting the ultra-direct style she is known for.

She also began concealing her missing left arm with darkness, living with the physical and emotional scars left by the Holy War.

Although she still loathed the Goddess Clan, she could not completely dismiss the memory of Elizabeth, the one goddess who genuinely tried to save demons and who literally restored her from being a monster.

Defeat and Sealing

Eventually, the Demon Clan lost the Holy War.

Derieri and the other Ten Commandments were sealed away for three thousand years.

She remained sealed until the present era, when Fraudrin’s schemes caused the Commandments to be revived.

Thus she re-entered the world of Britannia centuries later, carrying all her old grudges into a new age.

Revival and Human Soul Harvest

After being revived by Fraudrin, Derieri returns as one of the Ten Commandments.

She mainly operates alongside Monspeet, her long-time partner who understands her better than anyone.

To restore their magical power after revival, the two of them roam Britannia and devour human souls.

They target multiple settlements, including the Black Pleasure District of Belford, and end up consuming the souls of people from nine towns and villages.

Derieri shows little mercy to humans at this stage, treating them as resources to fuel her power.

Her behavior is heavily shaped by centuries of war and betrayal.

Appearance at the Vaizel Fighting Festival

Derieri and the other Commandments appear at the Vaizel Great Fighting Festival.

They arrive as reinforcements for Drole and Gloxinia, who had been facing difficulty.

There, Derieri fights Meliodas, leader of The Seven Deadly Sins.

With the combined might of the Commandments, they overwhelm Meliodas, and Derieri participates in his apparent defeat.

Following Meliodas’s “death,” the Ten Commandments invade Britannia over the next month.

Derieri takes part in this large-scale campaign, spreading demon influence and terror across the land.

Lioness Castle Battle and Revenge on Nerobasta

During the defense of Liones Castle, Derieri confronts Nerobasta, a member of the Goddess Clan who possesses a human body as a host.

This meeting stirs up the unresolved grief and rage from the past, when Derieri’s sister and fellow demons were slaughtered.

Driven by that hatred, Derieri ruthlessly overwhelms Nerobasta.

She shows no mercy and kills her outright, venting centuries of anger on a representative of the Goddess Clan.

Around this time, she encounters the present-era Elizabeth Liones, who looks identical to the goddess Elizabeth from 3,000 years ago.

Derieri moves to attack, but her actions are interrupted by the unexpected return of Meliodas, now significantly stronger.

Clash with Meliodas and “Full Counter”

When Derieri and Monspeet confront Meliodas again, they find him hotter with power and more dangerous than before.

During the battle, Derieri’s powerful attacks are turned against her when Meliodas uses his signature technique, Full Counter.

Full Counter reflects magical power back at the attacker with amplified force.

Derieri and Monspeet are both caught in the reflected onslaught and are blasted far away from the battlefield.

Derieri survives, but is separated from the main forces of the Ten Commandments.

In the aftermath of being spared, her mindset begins to change.

Life in the Shack and Crisis of Confidence

Some time later, it is revealed that Derieri and Monspeet survived the Full Counter.

They are rescued by a human woman living in a poor shack in a remote village.

The two demons end up living quietly with her, receiving shelter and basic care.

Derieri is puzzled by Meliodas’s choice not to kill them and by the kindness of the human who helps them despite knowing they are demons.

As the Second Holy War looms, Derieri’s doubts about her role in the Ten Commandments deepen.

She begins to feel that she no longer truly wants to live as a Commandment, nor does she have the resolve she once had.

Eventually, she tells Monspeet that she wants to return her Commandment of Purity to Zeldris and effectively quit being a member of the Ten Commandments.

This marks a major turning point in her character development, showing that she is tired of endless slaughter and vengeance.

Attack by Estarossa

Just as Derieri decides to give up her Commandment, Estarossa arrives to collect Commandments for himself.

His sudden assault catches them off guard and leads to a deadly confrontation.

Because of the nature of his powers, Derieri is at a significant disadvantage against Estarossa.

Monspeet steps in to protect her, and he and Estarossa engage in a fierce battle.

Monspeet manages to turn the tide using his magic and temporarily immobilizes Estarossa.

Believing the danger to be over, Derieri lets her guard down and approaches the two of them.

However, Estarossa is not completely unconscious.

He suddenly grabs Derieri by the neck and prepares to kill her with a darkness-clad hand strike.

In a split-second decision, Monspeet uses his magic to swap places or redirect the attack, causing himself to be struck instead of Derieri.

He is impaled through the chest, and his last remaining heart is crushed, ensuring his death.

Realizing he is at his end, Monspeet uses his remaining power to fling Derieri far away into the sky and out of Estarossa’s reach.

Derieri is forced to witness her partner’s death and is left emotionally shattered.

Emotional Break and Final Stand

After being blasted away, Derieri is overwhelmed with grief and guilt.

She blames herself for letting her guard down and indirectly causing Monspeet’s death, and for the fact that throughout their long history, she feels she never gave him anything in return for always protecting her.

While she is in despair, she senses the magic of Elizabeth Liones and heads toward the new battlefield where the Second Holy War is raging.

There, she reunites with Elizabeth in the present era.

Derieri confides in Elizabeth about Monspeet:

Monspeet always silently protected her reckless back, and she feels she did nothing for him in return.

Elizabeth responds that she understands the feeling, drawing a parallel with her own wish to repay Meliodas’s feelings.

Elizabeth then gently tells Derieri that what truly matters is not necessarily knowing exactly how Monspeet felt, but how Derieri herself chooses to feel and act toward him now.

These words move Derieri deeply and influence the resolve she shows in the final stages of her life.

Derieri then joins forces with Elizabeth, Sariel, and others to try to stop Mael (the true identity behind Estarossa after his memories are restored).

She fights bravely in this last battle, determined to act on the feelings she has finally faced.

During the confrontation, Derieri’s remaining heart is pierced.

She dies in the fight, giving her life in a final attempt to prevent further tragedy.

After her death, she learns indirectly that Monspeet had long harbored romantic feelings for her and that his actions were a subtle confession of love.

She is grateful to him and, in death, finally fully recognizes the depth of his devotion.

Because Mael uses a power known as “Invitation of Reincarnation,” Derieri’s soul is marked for rebirth.

It is implied that she will eventually be reincarnated somewhere in the world with her memories intact or partly intact.

Derieri’s relationship with Elizabeth is one of the most complex and emotional threads in her story.

It spans both the ancient Holy War and the present era.

First Encounter – The Past Elizabeth

Three thousand years ago, Derieri meets the goddess incarnation of Elizabeth during the demon rescue operation.

Elizabeth tries desperately to negotiate peace and promises to save the demon captives in exchange for cooperation.

Derieri is initially skeptical but begins to acknowledge Elizabeth’s sincerity.

However, Ludociel’s massacre destroys any budding trust, and Elizabeth ends up standing on the same battlefield as the one who betrayed Derieri’s hope.

Later, when Derieri and Monspeet become Indura, it is Elizabeth who restores them.

Despite being a goddess, she risks herself to save two demons who have become monstrous, proving that her compassion is genuine.

This creates a complicated bond: Derieri despises the Goddess Clan, but she cannot erase what Elizabeth did for her.

There is both resentment and a buried sense of gratitude.

Present Era Encounters

In the current timeline, when Derieri encounters Elizabeth Liones, she is shocked.

Elizabeth looks and feels exactly like the goddess from three thousand years ago, prompting Derieri to question why “that girl” is here again.

This reaction becomes one of the story clues that Elizabeth is reincarnated repeatedly with her memories sealed.

Derieri’s recognition is part of unraveling Elizabeth’s hidden past.

Later, after Monspeet’s death, Derieri openly grieves in front of Elizabeth on the battlefield.

She admits how much Monspeet meant to her, and how she regrets never returning his kindness.

Elizabeth listens and responds with empathy rather than judgment.

She tells Derieri that while she cannot say for sure what Monspeet truly felt, what matters is how Derieri chooses to think about him and honor him now.

These words help Derieri find a form of emotional closure and the resolve to fight not out of blind hatred, but out of a desire to protect what little she can still protect.

This changes the tone of her final stand, giving it meaning beyond pure revenge.

At the start, Derieri appears as a brutal, battle-hardened demon who speaks in blunt phrases and shows little regard for human life.

Her hatred for the Goddess Clan is intense and personal, rooted in the betrayal and murder of her sister and comrades.

However, her time living quietly with a human woman, Meliodas’s choice to spare her, and the memory of Elizabeth’s kindness begin to shake that hardened shell.

She becomes unsure whether she truly wants to continue as a Commandment.

Her bond with Monspeet reveals a softer side.

Although she rarely expresses it openly, she cares deeply about him and feels devastated when her carelessness leads to his sacrifice.

In the end, Derieri’s story is about a warrior who has known nothing but war and betrayal slowly rediscovering the possibility of trust, regret, and love.

Her decision to fight alongside Elizabeth one last time, and her implied future reincarnation, suggest that she may one day live a life not defined solely by rage and loss.

In the sequel series Four Knights of the Apocalypse, it is hinted that Derieri, because of Mael’s reincarnation magic, will eventually be reborn with her memories carried over.

While details are not fully revealed, this sets up the possibility of her return in a new form and era.

Her legacy continues through the impact she had on Monspeet, Elizabeth, and the broader story of demons and goddesses.

Even in death, Derieri’s journey from hatred to a more complex, humanized understanding of the world resonates beyond the original Holy War.