ďYouíre definitely part of the family [of the Eye], Koishi-san, but at the same time thereís never been one quite like you before. You may not have the same powers as, say, your mother did, but in exchange you seem to have something different entirely.Ē
Sibling Yin-Yang: Koishi inherently believes in humanity, while Satori believes the only way to change humanity is violence. Their powers are also opposite: Koishi's ability to dive into people's mind and subconscious mezzing contrast with Satori's mind reading. Furthermore, they wield opposing elements, Water is Koishi's domain while her sister controls Shock and Awe
Speaks Fluent Animal: Koishi's power lets her communicate telepathically with youkai, regardless of form.
She didn't want Kaguya to have an explanation. Explanations meant she'd need to accept that she had a reason for screwing her over beyond being a heartless bitch, and then she'd have to let the grudge go. But forgiveness was hard, so much harder than just staying angry.
Teen Genius: But only when it comes to chemistry or biology.
Renaissance Woman: "Kawashiro Nitori. Physics professor. Magical cult leader. Bartender...?"
"I implore you. Watch for the Sirens. Ensure that they are kept safe. And most of all, make sure that the Teardrops do not fall into the wrong hands. I ask you this, as a former ruler of your people; for I would rather you had a kingdom still standing to rule."
Former leader of the youkai. Sacrificed herself to protect the world from the Ravager.
There was something in those eyes that scared Nitori. It was a look of disregard, what could be politely referred to as pragmatism. She was grateful that Sakuya was on their side, because she would have made a dangerous enemy.
She had always been prideful, Nitori thought to herself. A brilliant operative, but one with a habit of letting her prejudices get the better of her.
She harbors a dislike for Sango as well, despite her being a fellow youkai, because while the surface world the wolf youkai once ruled is overrun and being polluted like whoa, Sango lives in the deep ocean where that pollution is easier to avoid.
Subordinate Excuse: After the events of the fourth arc, she asks to be reassigned to the permanent protection of Aya Shameimaru.
It was like looking down at a younger version of herself before things had started to come apart. She made a mental note to watch Sumire just to make sure she didnít make the same mistakes Komachi had.
Sibling Yin-Yang: In both personality and abilities, to Sakuya. Sakuya is a Glass Cannon who fires away cards at a distance, while Youmu's abilities mostly require her getting up close and personal. Furthermore, Sakuya's Pragmatic Hero tendencies irk Youmu's more honorable views
He Who Fights Monsters: Mokou trained Cirno to defend herself from bullies, but she ended up becoming the leader of the bullies herself.
More Than Mind Control: The Mindcoil latches onto whatever underlying psychological issues the victim has to exploit and get them to attack the Sirens. In Cirno's case, it feeds on her resentment towards Mokou and more importantly her own insecurity about being so weak.
Does This Remind You of Anything?: In-universe example. Iku seems to think that Koishi's injuries, acquired during her magical girl battles, are actually evidence that Koishi is an abusive relationship with Sango.
Well Done Daughter Girl: Kaguya's father has very high expectations of her which she struggles to live up to. The Kaguya/Mokou feud actually started when she stole the Hourai Elixir (in this universe, a health supplement that really works) from Mokou to please him, and Kaguya is implied to feel extremely guilty about it.
"...What I am about to tell you does not leave these walls. Am I understood?"
Chemistry teacher at Gensouto High School.
Cool Teacher: Has a good relationship with her students and the other teachers, and tells Mokou about Kaguya's father, though she only does that because she knows Mokou must have a good reason for it.
Introduced in the third arc
"...Well, you get points for guts, Iíll say that much. But Lady Luck only has one girl she gives a damn about, and itís me."
A gambler secretly working for Rinnosuke Morichika, and his adoptive daughter of sorts. She develops a real hate-on for Sakuya after Sakuya counter-cheats to stop Tewi's cheating and walks away with millions of yen.
More Than Mind Control: The Mindcoil latches onto her preexisting issues regarding the lies she's told herself since childhood regarding her father's brutal beatdowns and eventual murder of her mother.
Big Bad: Played with. He sees himself as this, but the Black Claw regards him as not much more than a useful pawn and a loyal source of funding. Nevertheless, he manages to be a real pain for the Sirens to deal with, and as far as non-supernatural happenings go, he is a big bad.
Not So Stoic: She breaks down sobbing into Flandre's arms when she discovers that Flandre has come to terms with the fact that she will never get better, but resolves to make the best of her life anyway.
"Iím sick of this stupid game you keep playing. What if I donít wanna be a vampire? What if I wanna be normal just like everyone else?!"
Younger of the Scarlet sisters. Unlike her sister, she doesn't put on a show of being a vampire to cope, she's just frustrated and this drives her to latch onto Sakuya's intense denial.
Nitori typed in the name lazily. They had to settle for the family name, Scarlet, mainly because all of them found the name Flandre so foreign they had no clue how to spell it.
"I wanted to disappoint you when you dug up the truth."
A brilliant geneticist who specializes in genetic disorders, she ended up being hired by Remilia and Flandre's parents to take care of them in their illness, and is now their legal guardian.
Escapism: The reason for her love of magical girl manga.
Ill Girl: For different reasons than the Scarlets - she just has a weak constitution in general, not tied to any one illness.
Open Heart Dentistry: Patchouli is a geneticist, but accepted a probably-misinformed request to work as the Scarlets' obstetrician because it payed well (and her own poor health made it hard to find work in her actual field).
One-Winged Angel: More literal than the other mindcoil victims in that she actually does gain wings in her showdown with the Sirens.
More Than Mind Control: The Mindcoil brings out some latent Knight Templar tendencies in her, and latches onto her frustration regarding her perceived inability to keep the worst criminals off Gensouto's streets.
What the Hell, Hero?: At least twice she gets called out by other characters. Once by Keine and the crowd of protestors that demands a reopening into the case against Morichika (though, not much Eiki can do about that one for now), and more importantly by the Sirens who deduce that the person in the crowd who turned the protestors into an angry mob was planted by Eiki herself, acting under the influence of the Mindcoil.
"From her raised vantage point, Eiki could make out a keepsake the lawyer had hidden beneath the bench - a shako cap, the sort the Japanese army used to use. Sumire had told her over drinks that it had been her grandfatherís, and that sheíd wanted to keep up the family tradition of keeping the people of Gensouto safe."
A talented new prosecutor of the court. She presents the evidence against Morichika at his trial.
ďKomachi-san...the more I read into Morichikaís past, the more I wonder how much of a monster he really is. He was born into a bad family and got brought up to see lying and stealing as a virtue. I feel like...like itís not so much his fault as it is the fault of the circumstances he got brought up in.Ē
"Iíd like to be the good guy, but when good doesnít pay well enough you have to go with what you can get, donít you?"
Rinnosuke's lawyer. Apathetic, lazy, disrespectful, and damn good at twisting the facts.
Amoral Attorney: She comes off like this in a big way during her first appearance. In the sixth arc, however, it's subverted in that she does have morals, she's just resigned to doing the only thing she can do well (which is to game the legal system) in order to pay for the upkeep of the Hakurei Shrine. And when she gets the chance, she cooperates in passing on some information about her worst client, Morichika, in order to try to finally put him behind bars.
"I donít want to see any of you out here until itís done, or you can all go find jobs at Kakashi News! ... But donít get a job at Kakashi News. Himekaidou is an asshole, yíknow that? Thinks she can run a paper and be a journalist at the same time. What a bitch."
Bunbunmaru reporter and editor. She normally just writes tabloids and gossip columns, but she also has exclusive access to the Red Lily, an informant in the Gensouto Court.
Egopolis: Downplayed in that it's just her office, but she seems to cover everything from door buzzers to coffee mugs with "AYA SHAMEIMARU - BUNBUNMARU REPORTER AND EDITOR" in garishly large font.
"[The Saigyouji family] has been skilled swordsmen for centuries, but itís only the last few generations that have really stood out. Yuyuko was pretty much the brightest star of the lot - easily one of the top 100 kendo practitioners of her generation, and one of the top 5 women."
Hidden Depths: Yuyuko is introduced in a manner much like her canon counterpart: happy-go-lucky, casually rich and powerful, and friendly. In reality, she has been in deep denial for the past ten years that her son ever died, and that she's manipulated Youmu into crossdressing so that she could maintain the illusion that her son was still alive.
Hyper Awareness: At one point, she correctly deduced that someone behind her was about to open a door they probably shouldn't, because she couldn't hear the sound of floorboards being walked on anymore.
Stepford Smiler: Her house is huge and grand, and unlike the other rich people she deals with, she made every yen of her wealth legitimately. She has a warm, personable manner with the temporary workers she hired to clean up the backyard. She dotes on her son Youki, and seems to cultivate an image of friendliness and kindness. Nope.
The original Youki Konpaku
"Yes, yes! They didnít forget. They didnít forget me! Mother didnít-"
The real Youki Konpaku, Yuyuko's son. He died ten years ago in a childhood illness, and when he died, Yuyuko made Youmu crossdress in order to convince herself that her son was still around.
"These kids need love and affection desperately, and while the Institute does its best we canít fill in for a real parental figure. There arenít enough of us to go around, sadly, so itís people like you that deserve the real praise."
Director of the Myouren Institute, an orphanage/religious organization/charity that takes care of abandoned children in Gensouto.
Doppleganger Attack: Uses a lot of clones in combat, mostly to confuse opponents and provide distractions. To make matters worse, they can also attack physically
Combat Pragmatist: In her fights with Ran and the Sirens, she shows absolutely no sense of fair play. Mamizou's liberal use of backstabs, dopplegangers, petrification, and trickery place her fighting style firmly in this trope
Sadistic Choice: During the war against the Ravager, the Ravager threatened to attack her people unless she ambushed her own allies, the kitsune under Ran. Mamizou chose to ambush her own best friend, thus leading to Ran's Roaring Rampageof Revenge
Agent Indigo /Ran Yakumo
An agent looking for Mami Agent Indigo is actually Ran Yakumo, Yukari's former servant and queen of the Kitsune, in the middle of a Roaring Rampageof Revenge against Mamizou as a result of Mamizou's decision to ambush the kitsune.
Well-Intentioned Extremist: Satori believes that the only way to stop humanity's excesses is through violence. This places her in direct conflict with her sister
Face-Heel Turn: Satori was captured by the Black Claw and convinced by Leviathan to aid their cause
The Woman in Black /Iku Nagae/Leviathan
"I see. So you seek power?"
Seems to be one of the higher-ups in the Black Claw. She has the power to inflict the Mindcoil on people. In reality, she is Leviathan, another member of the Ravager research team. Already a brilliant scientist, she became even more involved in the project due to a Roaring Rampage of Revenge against humanity after her parents were killed. She posed as Iku Nagae, the school nurse in order to have easier access to the Sirens