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Villain Overview

My true wish? To dismantle this world. Why? For the fun of it. Anger. Sorrow. Despair. Nothing else gives me the same kick. They're my pleasure and joy. I want to watch the residents of some inconsequential world be torn apart... That's all. That's right! This Spirit amalgam's falling apart the seams! Can you believe the information of just one man made me fall from grace?! You may learn from the true nature of his evil and alien madness!
~ Kaguya to the heroes.
I'm sorry Liliruca. I needed a replacement Spirit twin to make the act convincing! I really am sorry I didn't kill you the way! But rest assured! I'll kill you now, "Yuzuru"...a̶n̵d̶ ̵b̷u̷r̶y̶ ̷y̴o̷u̷ ̶i̷n̸ ̶c̵o̶l̶d̸-̷b̸l̴o̴o̵d̴!̵
~ Kaguya to Liliruca.

Kaguya Yamai, later revealed to be Spirit Amalgam, and later known as Kaguya Ray Peram Westcott or The Impostor and False Kaguya, was the main antagonist of the 2019 mobile game Danmachi Memoria Freese - Ais Catastrophe, being introduced as the main antagonist of the crossover between Is It Wrong to Pick Up Girls in a Dungeon? and Date A Live. Kaguya was a fragmental Spirit born from the mana of all Spirits sealed by hero Shido Itsuka who merged herself with Isaac Ray Peram Westcott and the mastermind who teleported the heroes of Date A Live universe to Damanchi world. She was later revealed to be a Spirit Amalgam who merged herself with Westcott's personality, becoming a new Isaac Westcott from the Second World. She serves as the evil counterpart of Mayuri.

She was a immensely powerful Spirit who could use the power of all Angels from the Sephira Tree and could easily manipulate the powers of the Spirit of Origin, Mio Takamiya, to turn other being in Spirits as easily as Mio could.

She was voiced by her original VA from the original anime and games, Maaya Uchida, whom also voices Frenda Seivelun from To Aru Kagaku No Railgun.


Despite being different entities, Kaguya was similar to her original counterpart.

Her hair is braided up, and she has a lean figure. She has a determined expression for most of the time. Kaguya's Astral Dress is mainly the color purple and has chains on her right hand and foot. The lower half of her body has a half skirt around her waist which drops to the knees and opens around her thighs. On her insane form, she have red empty eyes, just like Isaac Westcott's dead blue eyes.

Kaguya's height is stated to be 157cm, and her three sizes are B79/W56/H81.


"Westcott" was good (almost perfect) in imitating the original Kaguya. She was outgoing and outspoken to the point of being childish or immature. Unlike Yuzuru, she reacted violently to criticism and refused to let others tell her what to do.

Kaguya often speaks rather unrealistically, as if she is acting. It is later revealed that it really is acting. Kaguya believes she needs to talk like this because she is a Spirit, and therefore "super awesome", and therefore must act appropriately. 

After she shows her true colors, she showed to be a twisted and insane Spirit. She sees everything existing for her sake and inflicts betrayal purely because she loves the expression on her victim's face when their friends and family are turned against them. When Liliruca asked why she deceived her for so long, she immediately starts acting like she's the victim and feels sorry for not killing her before exposing herself to be the mastermind behind all the tragedies of the heroes' party.

Kaguya was a Spirit with complete and utter obsession with war, genocide, despair and destruction, and even stating she sees the multiverse as her plaything to travel and destroy worlds with her heart's content. She loves sorrow in any and all of its aspects; even if she is the one suffering or having her own life at risk provokes nothing but glee and excitement.



Kaguya was born as a pure spirit born from the mana of all Spirits sealed by Shido Itsuka in his world. During her time alive, she was born as an innocent Spirit but in the meantime she admired the corrupt director of Deus.Ex.Machina Industries, Isaac Westcott, and all of his atrocities and ambition. By her own free will, she decided merge herself with Westcott's persona, copying him and consequently becoming HIM in the body of a Spirit.

After becoming Westcott, now reborn as Kaguya, discovered the existence of other multiverses using the power she stole from other Spirits and decided to set herself as the rule of all existence by destroying the entire multiverse and killing all Gods of the existence. To start her own plans, she begins merging two worlds at the same time together. These "mergings" lead to catastrophic damage across both of the merging worlds, while also creating phenomenon that summon monsters in both worlds. These alone lead to the deaths of thousands of innocents on various worlds. 

Current events

Kaguya's first appearance.

After merging the worlds, Kaguya managed to open a portal between the worlds and teleported the heroes of DAL universe to the Second World: Kurumi Tokisaki, Shido Itsuka, Origami Tobiichi, Kotori Itsuka and Tohka Yatogami. After sending the said heroes to a dungeon filled with monsters, she took the form of Kurumi Tokisaki and attacked a party of adventurers near the dungeon, killing half of its squad and using her clones and letting them devour most of party alive with the solo purpose of incriminating Kurumi and other Spirits to the people of that world.

After passing the impression that all Spirits are monsters, she manipulates the Loki Familia, the guild responsible for sending adventurers to that dungeon and forces the main heroine of Danmachi's world, Ais, to fight Tohka to death while her other party members subjugated Bell and Shido. While the said heroines were fighting, Kaguya invades Ais' mind and discover she was a troubled person with psychological problems and a dark past full of tragedies and abuse. She then began to explore her fears and past while merging her with a Sephira Crystal to turn the heroine into an Inverse Spirit, locking up the pure heroine inside of her mind to see and feel the suffering and cruelty she experienced in her entire life for decades. When the two heroes begins their mission to rescue Ais, Kaguya immediately summons an Inverse Ais on the middle of the city, allowing them to save her. When the heroes finally managed to free Ais from her inverse form, Kaguya takes all the pain and suffering she Ais lived and threw back at her, resulting in her second Inversion; causing destruction to entire planet, killing billions.

Bell freeing Ais from Westcott's control.

However, to make her plans come to life, she needed Ais alive and so she took the form of Kurumi and returned to the past, to where the heroes could have a new chance to save Ais without breaking her Sephira Crystal, something is going to need if she wants to become the new God (Demon Queen) of the multiverse. When the heroes finally managed to save Ais from herself without breaking the Sephira Crystal, Kaguya and her plans were exposed by Kurumi, who then, finally, showed her true colors.

Kaguya reveals her true identity, including her own will, that is Isaac Westcott. Little by little, she express her true plans and how much she hated them. She then stated her true goal was to destroy the multiverse, "squeeze" the lives of all octillion living beings living in it in front of the Gods before turning the Heavens in a paradise of flesh and blood. When Lilirica, one of the main heroines of Danmachi cried and asked why Kaguya was doing that, she simple replied saying she was just pretending to be her sister and regretted for not killing her and cutting her head off due to her innocent personality. Before they could fight, "Westcott" taunts the heroes and states he is going to fight them in the form of Kaguya, a form Shido and his friends, can't hurt for being a close friend.

Shido and Bell defeats "Westcott" together.

With the Sephira Crystal pure, Kaguya proceeds to absorb the Sephira Crystal of Ais in herself, ripping off her soul and becoming an Inverse Spirit. As a Spirit, she begins to cause spacequake around the planet, causing the death of millions just to test her new powers. When the heroes are battling Kaguya Westcott, she begins to torture Bell in front of his friends by breaking his bones and ripping his skin. She then proceeds to summon a storm of darkness that destroyed the town they were in, making thousands of victims.

As a final act to end that battle, Kaguya tries to cut the head off Shido but she ended defeated anyway. In her final moments, she laughs insanely as she embraces the Shinigami sending her soul to Hell.

Power and Abilities

Natsumi's Arsenal

Unlike the other Spirits, Kaguya possesses not just one but all Angels of all Spirits who showed up on Earth. Her mostly notable ability was the power she stole from Natsumi. Kaguya has the power of transformation and shape-shifting, being able to turn anything into anything else within a range of 1 kilometer, including herself. If she loses concentration or becomes unconscious, all that had been transformed will return to their original state.

The transformed objects or subjects, including herself if she transforms, will be a near-perfect imitation of whatever they were transformed into. However, the memories and personalities of the transformed objects or subjects will remain the same.

Kurumi Tokisaki's Arsenal

Kaguya as Kurumi

Like Kurumi, Kaguya has the ability to manipulate mainly time, but her main power is associated with controlling shadows. Shadow is her primary element while Time is her secondary element in terms of usage. Combined with the power of the 8th bullet, she can create a clone that has all her experiences, memories, abilities, etc.

These clones can take the form of long white hands with red outlining when they are in Kurumi/Kaguya's shadows. However, as these are her past selves, they sometimes may contain feelings which the current Kurumi/Kaguya no longer possesses and as such, Kurumi/Kaguya will not hesitate to kill these clones if they choose to disobey her. These clones are less powerful than Kurumi/Kaguya herself as she has mentioned in the last chapter of Volume 3 and in the epilogue of Volume 4. She can form a single clone by shooting herself with Zafkiel's 8th bullet, or bring out all of her clones at once from the shadows which she keeps them in. She can also use these shadows to store her clones all at once and all the time they've collected, if she needs to do so. She can also control her clones partially through small fields of shadows, most often to hold someone in place and prevent them from moving.

Yamai's Arsenal

Like the Yamai Sisters (mainly Kaguya), she have the power of the original; have the power to manipulate wind. They can gracefully control the air currents in order to glide through the sky. At their full power, both of them can easily create a typhoon that can blow away a small island. 


Well played, Nightmare! Having you drift in this world with me was my one stroke of poor luck.
~ Kaguya to Kurumi after she revealed her master plan.
Nightmare was right. I was innocent at first. But then it took one single drop of venom to make me what I am now... to tell the truth... I feel better now! What do I look to you? A beautiful girl? Perhaps an ugly, misshapen monster? It's too bad I can't tell.
~ Kaguya to Bell's party.
I knew the Sword Princess could make my dreams come true. I could see the black flames inside her and I could tell it would facilitate destruction, rampage, and despair. But my plans were cut short... by you two. Heroism is truly frightening.
~ Kaguya to Shido and Bell.
Let me see you cry! Let me drown you in the blood of all your friends!
~ Kaguya
Gods and Familia alike, try to stop me! Try to make me laugh!
~ Kaguya to all Gods.
It's quite simple. I'm an Amalgam of Spirit Information. I can't tell you if I came by conscidence. In any case, a paranormal entity-a distortion like me was swept into this world.
~ Kaguya revealing her identity.
I'm an union of every Spirit's information. I could mutilate you by sword, or exterminate you by light, or immolate you with flames. I can you kill in one billion different forms... or maybe I could use the power of Nightmare to go back in time for the second time. But I'll give you a reward for unmasking me.
~ Kaguya about to engage the heroes.
HAHAHAHA! What a nice expression you have! Show me more of it! SCREAM FOR ME!!
~ Kaguya torturing Bell.
Stand aside, mortals! And hail your new Demon Queen! It's the arrival of the Demon Queen! HAIL! ME!
~ Kaguya rising to power.
I'll hold all octillion lives of this Multiverse and squeeze all of them in front of the Gods! I will cover your palaces with flesh! I'm a REAL God! Be grateful, mortals! Because, I, Demon Queen, will take Her time to punish you!
~ Kaguya Westcott
~ Kaguya
I see... there were two heroes after all. My Demon King was bested from the outset. Ahhh!! The death! Is coming! So good! Kuku... HAHAHAHAHAHAHAHAHA!!!!
~ Kaguya's last words


  • Curious enough, Maaya Uchida, also voices Liliruca Arde, the female character from Danmachi world who was chosen by Kaguya to be her new sister and became her new "friend". Because of that, Maaya voices the two characters at the same time.
  • Kaguya in this world is probably the most evil and insane version of any Spirit to show up so far in the entire franchise, even more so than Kurumi Tokisaki who was utterly disgusted by her atrocities and crimes.
  • This is not the first twisted version of Kaguya to exist in the series. The first "evil" version of Kaguya appeared alongside her sister, Yuzuru, in a fantasy comedy side-story where they are the generals of the Demon King who was sealed in a distant land but were set free after a thousand years. In this version, they represent the typical fantasy demons (notable for being Succubus) trying to seduce the hero (Shido Itsuka) into tricking him to let their leader, the Demon King, to kidnap the princess (Tohka Yatogami) and marry her against her will. However, unlike the demonic version of Yamai, this version of Kaguya reborn as Westcott is the most serious, dark and evil version of Yamai to date so far.
  • Yamai Westcott was reborn with empty eyes like if she was brainwashed or suffering, however, it was revealed they were the eyes of Isaac Westcott, that are known for being empty dark-blue eyes. The fact they are red means she is even more insane than the original Westcott from the First Earth.
  • This is not the first time that an original Spirit is born from the mana of all Spirits in the franchise. The first Spirit to be born from pure mana was Mayuri (an original Spirit from the film), the first Spirit to be born from the mana that Tohka, Yoshino, Kotori, Kaguya, Yuzuru, and Miku unconsciously emitted due to their stress and desire to have Shido all to themselves. However, since she was born from spirit mana, she would eventually disappear. Unlike Mayuri, Kaguya had no problem in living even if the Spirits' mana that brought her life creased to exist.

External links


           57c95c05a96ea789226e9678b255d59.jpg Villains

Overall Main Antagonists
Isaac Ray Peram Westcott | Mio Takamiya | White Queen | President Hanagata | Yuunami Airi | Sherman | Kurome Ankokuboshi | Rei Ryghts

Spirits (Date A Live)
Rinne Sonogami | Kurumi Tokisaki | Origami Tobiichi | Miku Izayoi | Mukuro Hoshimiya | Kyouno Natsumi | Yoshinon | Ren Dystopia | Kaguya Ray Peram Westcott | Nibelcol | Marina Arusu | Phantom | Beast

Deus.Ex.Machina Industries
Isaac Ray Peram Westcott | Ellen Mira Mathers | Artemisia Bell Ashcroft | Jessica Bailey | Mana Takamiya | Origami Tobiichi | Minerva Liddell | Marina Arusu | Roger Murdoch | Simpson | Russell | Edgar F. Caroll | Maruna Arusu | James A. Paddington | Andrew Kersee Dunstan Francis Barbirolli | Ryouko Kusakabe | Tomonara | Kagaya | Nibelcol | Elliot Baldwin Woodman | Mio Takamiya | Karen Nora Mathers | Knox | Ernest Brennan | Barton | Captain Reys | Cecile O'Brien | Leonora Sears | Ashley Sinclair | D.E.M Industries Droid Army

Inverse Spirits
Inverse Tohka Yatogam | Devil Origami | Dark Yoshino | Nibelcol | White Queen | Isaac Ray Peram Westcott

Okamine Heavy Industries
Torataro Okamine | Mikie Okamine

Ratatoskr Council
Reine | Elliot Baldwin Woodman | Karen Nora Mather | Fraser Douglas | Gillian Almsted | Roland Claiton

Bilah Kingdom
Aiai Nogi | Ayame Takeshita | Yui Sagakure | False Proxy | Tsuan | Isami Hijikata | Sheri Musi-kA | Furue Tonami | Rinemu Kirari | Mizuha Banouin | White Queen | Carte À Jouer | Kareha Banouin | Doll Master | Retsumi Jugasaki

Japan Ground Self-Defense Force
Anti Spirit Team
Ryouko Kusakabe | Tomonara | Kagaya | Origami Tobiichi | Mana Takamiya | Mikie Okamine

Special Sorcery Service
Minerva Liddell | Cecile O'Brien | Leonora Sears | Ashley Sinclair

Charllote Meyers | Izabell | Dais

Demon Kings
Camael | Zafkiel | Nehemah | Zadkiel | Eden | Demon King | Kerubiel | Gabriel

Unknown Race
Asanagi Kyutoku | Mahiru Ookuni | Yuunami Airi | Yaegaki Aoi

Dorfa Corporation
Four Heavenly Czars of Dorfa
President Hanagata | Zenke | Marianna | Apollonius | Paiga | Bernard | Zagi | Seguro | Vivia | Della | Sanguina

Septerion Club
Junown | Chiaki | Noei | Pappin

Seven Sages
Rei Ryghts | Arfoire | Pirachu | Abnes | Croire | Anonydeath | Copypaste | Mr. Badd | Yellow Heart

Secret Organization AffimaX
Affimojas | Arfoire | Pirachu | Steamax

Arfoire Syndicate of International Crime
CFW Magic | CFW Tricky | CFW Judge | CFW Brave | Linda

Zero Dimension
Kurome Ankokuboshi | Dark Black | Dark Blue | Dark Green | Dark Purple

Animal Abusers | Hotshot TV Producer | Kidnappers | Rapists | The Dark Guardian | White Guardian | Red Guardian | Ashcroft Assembly | Demon King | DEM Industry Alpha Team of Japan Branch | Azna=Leb | Ganache | Grim Reaper | Demon Yamai | Order Woman | Singe | Overlord Momus | HachimaJin | Minitouros | Dark Knight | Demon King Jester | Cheetah | Yvoire | Kyouno ■■

            Dungeon-ni-deai-wo-motomeru-no-wa-machigatteiru-darou-ka-565e77b6a3956.png Villains

Freya Familia
Freya | Ottar Allen Fromel | Tammuz Belili | Gulliver Brothers | Hedin | Helun

Valleta Grede | Thanatos | Olivas Act | Vitteaux | Jura Halmer

Thanatos Familia
Leader: Thanatos
Members: Valleta Grede | Barca Perdix

Kali Familia
Leader: Kali
Members: Argana Kalif | Bache Kalif | Tione Hiryute | Tiona Hiryute | Seldas | Belnas | Elnea

Ikelos Familia
Leader: Ikelos
Members: Dix Perdix | Gran | Baloy

Soma Familia
Zanis Lustra

Memoria Freese Exclusive
Original: Vitteaux | Tiones Walpurgis | Aylis Navarre | Baldo | Erebus
Attack on Titan Crossover: Titans | Reiner Braun | Bertolt Hoover | Eren Yeager
Date A Live Crossover: Kurumi Tokisaki | Kaguya Ray Peram Westcott | Isaac Ray Peram Westcott | Origami Tobiichi | Inverse Ais
Goblin Slayer Crossover: Goblins (Goblin Slayer)

Revis | Ein | Enyo | Mord Latro | Ares | Ged Reish | Ishtar | Samira |