Puella Magi Kazumi Magica: The Innocent Malice is a Spin-OffManga of Puella Magi Madoka Magica, written by Masaki Hiramatsu and illustrated by Takashi Tensugi. It ran in the monthly magazine Manga Time Kirara Forward starting in January 24th 2011. It features a different set of characters in a new plot separate from the anime, but in the same universe.THIS PAGE HAS UNMARKED SPOILERS FOR THE ANIME. YOU HAVE BEEN WARNEDKazumi Magica follows Kazumi, a young girl who wakes up in a suitcase with amnesia. Fortunately for her, she's quickly reunited with her friends, Umika and Kaoru. But when her life is in serious danger from a giant praying mantis, she unlocks her magical potential and transforms into a Magical Girl. Kazumi doesn't remember anything about who she was before she was locked in that suitcase, but as she works towards finding out more about her past self and her strange and difficult quest to fight Witches, what will the "new Kazumi" become?After nearly two years since it began, Kazumi Magica reached the end of its serialization on November 24th, 2012.The series has been licensed in America by Yen Press. The first three volumes are out now. Please use the official translations on this page when possible.Kazumi, Umika and Kaoru would laterappear in the Puella Magi Madoka Magica Online game.
Tropes in Puella Magi Kazumi Magica: The Innocent Malice include:
Amazon Brigade: The Pleiades Saints, a seven-member team of magical girls.
All There in the Manual: The collected editions have some information that isn't in the serialized chapters, such as the name of Kazumi's cat (Toto), and Airi's last name. Fortunately, the English release contains the collected edition extras.
Kazumi's cat was later named in-story in Chapter 12.
In Chapter 8 Jubey initially refers to Kazumi's magic as "breaking religious law"/"sacrilege" before apparently correcting himself and saying it's "destruction". Both are "hakai" in Japanese. This is completely removed in the English release.
Kazumi takes the Calling Your Attacks in Gratuitous Italian seen briefly in Madoka Magica and runs with it by having every magical girl in the series name their attacks and spells in Italian. (This is later explained in-universe; see Calling Your Attacks below.) The author of Kazumi would later write the screenplays of two of the Madoka Magica audio dramas, one of which has a new called attack in Italian that wasn't present in the original series. Word of God says he added another Italian-named attack in the screenplay of the other Drama CD, but it was cut from the final product.
Author Catch Phrase: "Ciao!" It appears in the Q&A pages for the collected editions (as "Ciao, Hiramacchi!") before finally popping up in Chapter 10.
Awful Truth: You knew it was going to happen. After Chapter 5, Kazumi has learned firsthand that magical girls become witches. What's worse is that Kazumi's teammates knew it already and were keeping it from her.
In Chapter 9 we learn the other Awful Truth: Kazumi's teammates are actually taking the Soul Gems of magical girls and turning their bodies into Human Popsicles.
Chapter 13 reveals that the real Kazumi became a witch and died; the Kazumi we've been following is the latest in a series of clones.
Be Careful What You Wish For: Averted with Kazumi's friends, who used their wishes to support their dreams without having them granted outright. As of Chapter 5, it's played straight with Yuuri's wish, which was....to become Yuuri. See, she's not the real Yuuri, but rather her friend Airi. The real Yuuri wished to heal Airi from her life-threatening illness. Both their wishes ended badly; Yuuri used too much of her magic to heal people, while Airi was already not in the right frame of mind when she made her wish.
It should be elaborated; in the anime, it's explained that "imbalanced" wishes have a type of Equivalent Exchange penalty. The greater a wish, the more likely for it to go awry or demand a cost that you can't afford. Someone apparently explained this to most of the cast beforehand, so they were careful to make their wishes aids to achieving their dreams as opposed for directly wishing for their dreams to be fulfilled. This also gives the benefit of the girls being able to take full responsibility for what happens afterwards, rather than taking in grief due to cruel fate.
Their attitude is taken from Michiru, who didn't wish for her grandmother to be cured, but to spend whatever time her grandmother has left together. She said she wanted to respect her grandmother's lifestyle. In this way, she avoided making the same mistake Kyoko made, which was to wish for followers for her dad without considering how he'd feel about it.
Eventually turns out to be played straight with Niko's wish. She wished to create another version of herself who had no memory of the childhood accident in which she shot her friends. So an exact copy of Niko was created...who went mad with anger when she found out the truth about her origins, and subsequently became a magical girl in order to take revenge, and was behind the creation of the Evil Nuts.
Big Bad: Yuuri, the mysterious magical girl. For the first arc anyway.
As of Chapter 18, it seems that the one pulling strings behind the scenes all along was Kanna Hijiri, Niko's clone. It appears that she broke down as a result of learning about her origins from Juubey. It's revealed that she's the one responsible for creating Evil Nuts, then giving them to Yuuri and Ayase, as well as turning Niko, Satomi and now Saki into witches. In short, she's behind most of the horrible events in the series so far.
Bittersweet Ending: By the end of the story, almost all of the Pleiades are dead, and the future promises to be uncertain for the surviving ones. However, after so many ups, downs and all-arounds, Kazumi can finally live as a normal girl, without the stigma of being a witch inside a human's body, and Kaoru and Umika are still by her side. Hope has triumphed over despair once again.
The Blank: What Niko does to the body of her "preliminary". Later, turns out it was actually what the so-called "spare" did to Niko.
Body Horror: Occurs in Chapter 6 to Kazumi and Yuuri's witch form. In a nice bit of symmetry, Kazumi's Body Horror is caused by Yuuri's magic trying to turn her into a pseudo-witch, while the witch's Body Horror is caused by Kazumi's magic trying to turn her into a pseudo-magical girl.
And then it's revealed that Kazumi already IS a pseudo-magical girl, and the Evil Nut was turning her back into a witch.
Bottomless Magazines: Averted with Kazumi's summoned guns. They do run out of ammo, and fairly quickly.
The Cameo: Silhouettes of Madoka and Kyubey are seen when Umika and Kaoru start explaining about magic.
Kyubey himself appears briefly in Chapter 4. He has more of a role in Chapter 5.
Madoka makes another appearance in her Magical Girl form in one of the extra short comics in volume 1.
Sayaka and Oktavia von Seckendorff appear as examples for an explanation the Pleiades give Kazumi in chapter 10.
The biggest is in Chapter 11 when Mami Tomoe appears - it turns out she saved the founder of the Pleiades from a witch before said founder contracted.
In Chapter 16, Kyoko makes an appearance in a flashback, where she battles with Yuuri Asuka before Michiru arrives and breaks it up.
Call Back: "Your wish has surpassed/had the power to combat entropy".
Many of Kyubey's appearances in Chapter 5 are visual references to the anime, such as watching Airi's witch transformation, or being framed in shadow behind a hospital window curtain.
Compare Yuuri and Airi's initial appearance at the hospital in Chapter 5 with similar scenes between Sayaka and Kyosuke in the anime.
Jubey's first lines in Chapter 11 are pulled almost directly from episode 10.
For an actual in-story Call Back, Kazumi's brief flashback in Chapter 1 where she remembers that only bad guys waste food appears again in Chapter 11.
Chapter 12 has Jubey recite Kyubey's monologue about witches from the end of Episode 9. There's also two more call backs to the flashbacks Kazumi has with her earring-bell from Chapter 1.
In Chapter 18, Mirai's death is exactly the same as Mami's in the anime, only it manages to be even worse.
Calling Your Attacks: Unlike the anime, where only Mami did this, Kazumi Magica takes this trope and runs with it, complete with Gratuitous Italian. It's later revealed that Mami was the first magical girl encountered by the founder of the Pleiades Saints. Said founder is purposely trying to imitate Mami, and insisted the other Pleiades play along.
Cerebus Retcon: The Pleiades' wishes could be considered this (Umika's wish for an editor to recognize her works, Kaoru wanting a healthy body to play soccer, Satomi wanting to talk to animals and Niko wishing for "regeneration"). When we first hear them they seem pretty innocuous and simplistic, compared to other wishes made in the series. They take on a serious meaning after ch 10. when you learn their backstories and find out why they would make these wishes.
Kazumi's bells. They turn out to be a keepsake from her grandmother. Well, kinda; she lost them but Saki gave her replacements. Also, one of them turns out to contain Michiru's Grief Seed, which Kazumi uses to save Umika and Kaoru from becoming witches.
Yuuri has several. All of her "clues" in Chapter 4 are explained in Chapter 5. Another one is disguising herself as Satomi in Chapter 3, hinting at her wish. However, the one that's easiest to miss is the spoon hanging around Yuuri's neck.
The news article Niko is looking at in Chapter 7, which was about a Japanese kid who shot people in California. In Chapter 8, copy-Niko's witch form has shooting target dummies as familiars, and in Chapter 9 there is a colored picture of Niko holding a gun. It's revealed in Chapter 10 that Niko was the kid in the article and the whole thing was a horrible accident.
Niko's wish for regeneration gives her the ability to create clones. Including the current Kazumi.
Clingy Jealous Girl: Mirai towards Saki. In particular, she seems to be jealous of Michiru/Kazumi, who it's implied Saki was in love with.
The container used to hold the Evil Nuts in Chapter 4 reappears in Chapter 10. It's purpose was to hold magical girls and their Soul Gems.
The Corruption: Like in the anime, Soul Gems still get dirty when magic is used. Unlike in the anime, the Weasel Mascot is quite capable of purifying them. Or not. Turns out the Pleiades' attempt to give Juubey that ability only resulted in him polishing the outsides to look purified, when in reality, they were continually accumulating corruption.
In Chapter 4 we learn that the fake witches are ordinary humans that have been implanted with an Evil Nut, an imitation Grief Seed created by a magical girl. This gives them the ability to transform into monsters, but it also makes them kind of nuts.
Death Seeker: The Kazumi fight in Chapter 14 was two-fold: the current Kazumi did not intend to fight the clones, while the others wanted their deaths.
Despair Event Horizon: Chapter 10 shows how each of the Pleaides (except Kazumi) went over the horizon before the story began.
Umika's book was picked up by an editor, who promised to get it published. Later on, she finds out that her work was plagiarized and released under the name of a famous idol. When Umika confronts the editor, he has the audacity to ask her when her next book will be ready.
Kaoru was injured in a soccer match by an opposing player. While she was recovering in the hospital, she saw the player who hurt her being brought in. It turns out that the girl had been bullied for hurting/ending the career of a great soccer player (Kaoru) to the point where she decided to try and take her own life.
Satomi received a kitten on her third birthday, whom she named Sare. Years later, Satomi ignores it (despite its loud pleading) and goes out. Sare dies and the vet says that, had the cat been brought in earlier, it could have probably been saved. Satomi realizes that, had she listened to Sare, it wouldn't have died.
Mirai was once a lonely girl who was ostracized by her classmates. Her only company is the teddy bears she makes by hand. As she sews up her 666th teddy bear, she cries as she wishes for friends.
When she was very young, Niko was playing "sheriff" with her two friends using a loaded gun. She accidentally pulls the trigger and the bullet ricochets around, killing her two friends and injuring her.
Saki was very close to her younger sister, Miyuki. When they're older, Miyuki is killed in a car crash, devastating Saki.
Eleventh Hour Superpower: When Kazumi makes her real contract with Kyubey during the final battle, it also upgrades Umika and Kaoru's powers and outfits.
The Fair Folk: The contract-making creatures are described here as fairies (although the official translation uses "mystical creatures" or "sprites"). One of them, Jubey, appears at the end of Chapter 3, although he's not revealed to be one until Chapter 4. It's later revealed he's an Incubator that underwent Heel-Face Brainwashing...not. He's actually a magical girl-created construct.
Development Gag: An early series proposal for Madoka Magica also described the contract-making creatures as fairies. This may be a reference.
Feminine Women Can Cook: Umika, Kazumi and the real Yuuri are really good cooks. Michiru apparently was as well; when the girls noticed that the current Kazumi had inherited Michiru's cooking skills, they took it as a sign that they may have finally created a successful clone of Michiru.
Foreshadowing: It's pretty heavily foreshadowed that magical girls become witches...and the Pleiades know this.
More character-specific, but when the Pleiades first arrive, Mirai is seen clinging to Saki, and also seems gleeful at the fact she's paired with Saki and Kazumi in their search. It's mostly ignored at the time, but guess who's shown to have a Violently Protective Girlfriend streak for Saki six chapters later?
In Chapter 6 Kazumi turns Yuuri into some bizarre witch/human hybrid. This ultimately foreshadows Kazumi's own nature as something similar.
Waaay back in Chapter 4, Kyuubey appears and says "I wonder if you'll do so well this time?" He's referring to the fact that Kazumi is their thirteenth attempt at reviving Kazusa.
Genre Savvy: In some ways, the things the Pleiades do sounds remarkably logical, after learning the full truth behind what it means to be a Magical Girl. They separate as many Magical Girls from their Soul Gems as possible, keeping their progression into Witches frozen while they work on a way to prevent them from ever turning, which keeps more Witches from being created. When one of their number becomes a Witch and dies, they preserve her body and Grief Seed in an attempt to resurrect her without turning to more wishes. And as soon as they learn Kyuubey's true nature, they lock him out of their city in a way that prevents him from making any more contracts in the area. Even Kyubey admits that their attempt to make Juubey capable of purifying Soul Gems wasn't a bad idea. Sadly, this being the franchise it is, none of it works.
Genre Shift: Much like it's parent series, it initially appears to be a straightforward magical girl series with a heavier emphasis on comedy and Fanservice. This only lasts for three chapters.
In Name Only: Initially, it appears that the only connection this series has to the anime is that the monsters are called witches. It gets increasingly subverted in later chapters, until it's very clear that it's set in the same universe.
Kill All Humans: This is what Kanna Hijiri (Niko's clone, who was created by her wish) wants to do. When she found out the truth, that she's not the original and was created by magic, she came to the conclusion that her life was a lie. Now she's set on killing normal humans and replacing them with artificial beings like herself and Kazumi.
So far it can still be considered Lighter and Softer than its parent series, if only because the reader and the magical girls are already aware of the details and catches that were huge, horrible revelations to the original cast, and because The Power of Friendship is emphasized even more. It only remains to see what the death toll is to know if it really is so.
At the end the death toll among the Pleides is four, with Niko, Satomi & Saki turning into witches & Mirai getting decapitated by Saki's witch.
Love Confession: In a tragic scene, Mirai proclaims her love for Saki, who has just turned into a witch. Mirai is then quickly decapitated and killed by her witch form.
Magitek: The Pleiades have a smart-phone application that can upload the magical wavelengths created by witches into Soul Gems, to make it easier to track them.
Male Gaze: Much like its sister spinoff, the art tends towards things like low-angled shots of the girls, focusing on their legs and backsides.
Marshmallow Hell: In Jubey's initial appearance, Satomi gives him a big hug. The problem is he's the size of a housecat and gets smothered.
Meaningful Name: The Pleiades Saints, a seven-member magical girl team, named themselves after the Pleiades Star Cluster. It's a pun in Japanese; "Pleiades Saints" and "Pleiades Star Cluster" only differ by one character and are pronounced the same way. The Pleiades cluster is also known as the "Seven Sisters", which is why they chose they chose that name for their seven-member group.
Speaking of which, Chapter 18 is titled "Connect", after Madoka Magica's opening theme.
Nice Job Breaking It, Hero: Chapter 21 reveals that Niko created Jubey as an incubator who would work for the Pleiades and clean their Soul Gems, and Umika cast a spell on the city to make Kyubey invisible to everyone in the city and even replace the memories of Magical Girls (including themselves) to show Jubey in the place of Kyubey, along with erasing the memories of how to clean Soul Gems the normal way using Grief Seeds. Unfortunatly, it turns out Jyubey wasn't actually able to purify Soul Gems, as he only removed the visible darkness without actually removing the corruption itself.
No Ontological Inertia: Referred to in Chapter 7 when Kazumi realizes that Airi couldn't have erased her memories because they didn't come back when she died.
The Evil Nuts apparent aversion of this hints that someone else created them.
Chapter 10 gives us the origin of the Pleiades Saints. Chapters 11 and 12 are a continuation and also adds Kazumi's origin...or so it seems.
Then another one in Chapter 18 for Kanna Hijiri, Niko's "spare."
Chapter 21 explains the origin of Jubey.
Orwellian Retcon: The release of the first volume redrew some parts of the artwork, especially in Chapter 2. During serialization, the Soul Gems in that chapter initially looked like normal stones, but were redrawn as anime-style Soul Gems for the volume. In addition, the redrawn chapter reveals that Kazumi's earring-bell is her Soul Gem.
Our Witches Are Different: The first witches of this series are just humans who can transform into monsters (although they feed off despair). Defeating them turns them back to normal, and it's said that someone gives them this power. Chapter 4 reveals they are actually "sort-of-witches" created by imitation Grief Seeds, known as Evil Nuts. The standard witches from the anime do exist.
Parental Abandonment / Conveniently an Orphan: Umika and Kaoru mention that their (and Kazumi's own) parents are working overseas, and Saki's father is said to travel a lot. No mention is made of the other girls having guardians, meaning there is no one to question why seven teenage girls are running around outside of school. Before the events of the story, Kazumi/ Michiru lived with her grandmother when she wasn't studying abroad; no other mention is made of her parents.
People Jars: Where the Pleiades keep the bodies of the magical girls whose Soul Gems they take.
Print Bonus: The collected volumes contain a few extra pages and some silly comics. It also has design info for the various antagonists and a writer's Q&A.
Psychic-Assisted Suicide: Before they became magical girls, the Pleiades Saints were witch-kissed and made to jump off a building. They meet Kazumi when she rescues them.
Ret Gone: After learning the truth about Witches, the Pleiades turn on Kyuubey, and attempt to "erase" him from their city. They cast a spell that makes all Incubators invisible to everyone in their city, as well as altering their own memories so that they do not remember ever meeting Kyuubey, replacing him in their memories with the false Incubator they created.
Schoolgirl Lesbians: What you can expect of an all-schoolgirls cast. Saki and Mirai are the blatant examples, but the most of the rest of the girls is suspicious as well.
Mirai Wakaba seems to be a shout-out to Wakaba Shinohara from Revolutionary Girl Utena given her brash nature, the fact that her wand transforms into a sword, and her Cute and PsychoYandere disposition against anyone who would harm her beloved Saki.
(Not) Sinister Silhouettes: A panel in the first chapter contains four silhouettes. Three of them appear to be Kaoru in her magical girl form, as well as Niko and Saki. The fourth silhouette, the one with a witch's hat, may be Mirai — she was seen wearing a similar looking witch's hat as part of her magical girl outfit in a small panel from Chapter 12.
Stepford Smiler: Judging by her attempt to kill Kazumi in Chapter 14, which she's disturbingly cheerful about, Satomi might have been this all along. Her politeness and smiles seem to have been hiding an unstable and violent side. Like Mami in The Original Series, this was most likely a result of finding out the truth about witches.
Story Arc: The first six chapters of Kazumi Magica can be thought of as one, connected through the primary antagonist. They can also be divided into two sub-arcs: The first three chapters are about Kazumi re-learning her role as a magical girl, and the next three are about a confrontation with the arc's Big Bad. The two sub-arcs also have dramatically different tones — the first three chapters are lighthearted and comedic, while the next three are just the opposite.
The next three chapters deal with an antagonistic magical girl, and the six chapters after that are the Origins Arc. The remaining eight chapters consists of the big finale
Unreliable Expositor: Subverted. In Chapter 5, Yuuri claims that the Pleiades Saints are a gang that kills magical girls. The subsequent flashback implies that she only thought that because her friend had turned into a witch, and was then killed by the Pleiades. But then in Chapter 7 the Pleiades really do attack a magical girl, and then do something to her Soul Gem. We later find that they sever the connection between Soul Gems and magical girls, and put them both in storage]]
In Chapter 10 Umika tells Kazumi that they lied to her about the origins of witches. What makes this disconcerting was that it was Jubey who told that lie to Kazumi.
Chapter 21 takes this Up to Eleven, and how! Kaoru lied about her real wish to soft-boil the circumstances of the Saints' wishes. Umika lies about brainwashing Juubey, and instead casted a city-wide brainwash spell so people will ignore the real Incubators as part of the Pleiades' plan to fight their system. Niko's "spare" was actually the real Niko, and the duplicate is the Big Bad! At this rate, Kyubey is actually more trustworthy than the girls.
The reason they lied about brainwashing Juubey is that they modified their own memories so that they would not remember Kyuubey, to make his exile from their city complete.
Chapter 12 contradicts Chapter 2, where Kazumi is told Umika and Kaoru didn't know what her wish was. In Chapter 12's flashback Kazumi does tell them about her wish. Furthermore, Kaoru's wish in the flashback is entirely different from what she told Kazumi in Chapter 2. It's later explained Umika and Kaoru were lying...and also that the entire flashback was filled with Fake Memories and omissions, including the important fact that they weren't even Kazumi's memories to begin with.
What Measure Is a Non-Human?: The Pleiades are utterly relieved to find that only Niko's "preliminary" turned into a witch...but it's clear to the reader that she had thoughts and feelings of her own. This eventually turns into Fridge Horror when we discover that it was in fact the real Niko who died, and the "spare" who had been passing off as Niko since then.
This is Satomi's attitude towards the Kazumi clones. Since it looks like the newest Kazumi might be corrupted by an Evil Nut, she just decides to kill her and try again.
In fact, all of the Pleiades have shades of this attitude - they just want Michiru back, and will keep cloning her (and the recently witchified Satomi) until they get it right. Saki's reservations only came from the fact that she loved Michiru and couldn't bring herself to kill the clones. Kaoru calls them out on this, but it doesn't work.
Chapter 5: Kazumi learns the Awful Truth firsthand when Yuuri becomes a witch. It's confirmed that the other Pleaides Saints already knew that magical girls become witches. A flashback reveals that Yuuri wasn't really Yuuri at all, but a girl named Airi. The real Yuuri was Airi's friend who had turned into a witch and was killed by the Pleaides Saints. Airi had wished to become Yuuri and took her name and appearance in order to get revenge for Yuuri's death. And she was being manipulated by Kyubey the whole time.
Chapter 8: Comparatively minor, but the Soujus pull out Evil Nuts, which either implies they were created by someone other than Yuuri. And then Niko becomes a witch.
Chapter 9: Mirai kills witch!Niko with one hit. Then another Niko appears, and we find the other one was actually a copy, which she demonstrates by erasing the face of it's body. Then Kazumi is taken to Mirai's museum, and she learns that the Pleaides are turning magical girls into Human Popsicles.
Chapter 10: Kazumi is told the truth about Soul Gems and witches. It then turns into the Pleiades' Origins Chapter as they give Kazumi back her memories. Umika's first novel was plagiarized by her editor and released as another person's work. Kaoru received an injury that prevented her from playing sports and made the person who injured her try to kill herself out of shame. Satomi's childhood pet cat died and she blamed herself for not listening to it. Mirai was a Nerd Glasses-wearing student ostracized by everyone else and her only companions were teddy-bears. Niko, as a little girl, accidentally shot her friends while playing around with a gun. Saki was caught in a horrible car accident with her younger sisterd Miyuki, who died. Then they all get witch kissed and jump off a building...where they are saved by Kazumi.
Chapter 13: The real Kazumi was a girl named Kazusa Michiru who turned into a witch and died before the events of the story; the current Kazumi is the thirteenth clone made from the remnants of the original's witch form. Kazumi's earlier exposure to the Evil Nut is causing her to revert to her witch form, and Satomi wants to kill her before it happens.
Chapter 14: Kazumi was stabbed by Satomi while in combat.
Chapter 15: Satomi becomes a witch while fighting Kazumi, and most of the other girls vote to kill Kazumi and revive her and Satomi as many times as is necessary.
Chapter 17: The Kazumi at the Freezer turns out to be a clone created by Niko, who shows up carrying the real Kazumi. When Mirai questions her, Niko points out Saki's Soul Gem, which is about to break. Then another Niko clone shows up behind Saki and presses an Evil Nut into her forehead, while the real Niko remarks that it would be troublesome if "you humans" killed Kazumi.
Chapter 18: Saki becomes a witch and decapitates Mirai, who refuses to fight because she doesn't want to hurt Saki. The Niko we've been following turns out to be a clone of Niko; the real Niko was actually the one who turned into a witch back in Chapter 9. Niko's wish was to create a duplicate of herself with no memories of the shooting incident in her childhood. She gave her original name, Kanna Hijiri, to the duplicate. The duplicate knew nothing about the Pleiades until seeing them fighting Yuuri's witch; she subsequently met Jubey and learned the truth about her origins. Her wish was to connect to the Pleiades without their knowledge in order to take revenge on them. Her goal is to use the magical girls in the Freezer to wipe out humanity.
Chapter 19: Jubey is an "incomplete" Incubator, disappearing and leaving the remaining girls on their own.
Chapter 17: "I can't let you kill Kazumi. You humans, that is."
What Happened to the Mouse?: We know what happened to them at the end of the story, but we are never given any explanation for the body-sharing Luca and Ayase. Unlike the other villains, we never learn their backstory or motivation. What did they wish for? Do they collect soul gems for any particular reason, or are they just Axe Crazy? Why the one body, two souls — was it an act of desperation, desire, or just one girl with such a split personality that she warranted two soul gems? Just who are they? They are/She is set up as a real anomaly, being both insane and predatory...then they're defeated and Niko's death ensures that they're promptly forgotten by the plot.
And for that matter just what happened to everyone after the reality rewrite in the anime? Does Kazumi even exist?
Chapter 12 continues Chapter 11's flashbacks, up until the end.
Yandere: The Pleiades Saints for Michiru. They have cloned her up to 13 times, with Kazumi being the most recent one, in the hopes of getting her back. Airi is also one for Yuuri, going so far as to wish to be her. No matter how you look at it, the girls are messed up.
Yin-Yang Bomb: Kazumi and Niko pull something like this off in Chapter 8. The Soujus also use a variation on the trope with fire and ice.