An Arm and a Leg: In Tortured Souls, he gives his own paper scrap to Naomi and uses Kizami's for himself. After he, Naomi, and Ayumi perform the ritual, the scene cuts to Naomi and Ayumi sitting back in the classroom, each holding one of Satoshi's severed arms.
Badass Boast: His first appearance in the game, has him without a trace of fear say he will rescue everyone. Which is pretty badass for a guy shaking from scary stories earlier and stuck in that school.
Chick Magnet: He attracts the attention of three girls, Naomi, Ayumi and his sister Yuka. The Lighter and Softer spin off Sachiko's Game of Love; Hysteric Birthday 2U, jokingly adds Yui and Tohko. But he is of course Oblivious to Love so he is also a
The Hero: Although in Blood Covered his chapter is in the middle of the game; every chapter before his has the characters fall deeper and deeper in trouble. When he first appears, he acts like a badass and his appearance is when the characters start to find a way to get out of there. Also the other characters treat him like the leader.
Idiot Ball: In the anime OVA, he leaves Yuka to do her business, and let's Sachiko, a ghost girl among ghost children who are known to slaughter everyone, go along with her. If this isn't bad enough, he goes inside and tells her to "scream if she needs anything". Guess three times if this happens.
No Hero to His Valet: He is thought of as the leader of the group, the only one to challenge this is Naomi. Who he probably has known the longest, excluding his sister.
Oblivious to Love: And, well, you can't really blame the guy: Naomi is such an extreme Tsundere that she practically comes off as emotionally abusive towards him, so it'd make sense that he wouldn't be able to see that she's in love with him. He does have a Love Epiphany with regards to Naomi in one ending. It's not in the True End, though.
You Are Worth Hell: Towards Naomi, if she loses her piece of the charm, he says he would stay with her. As well as in Book of Shadows, when he is put in a time loop. Instead of leaving when they refuse to listen to him, he decides to do the charm again, as he is the only one who can save everyone.
Naomi's known Satoshi ever since they were kids, and loves exploiting the fact that she knows all his weaknesses. However, she does this to try and hide her feelings for him, in typical Tsundere fashion.
All Love Is Unrequited: Satoshi is as much in love with her as she is with him, but he doesn't realize his feelings in most of the endings because he's afraid of being ridiculed by Naomi because of her extreme Tsundere attitude.
Cassandra Truth: In Book of Shadows, her mother doesn't believe anything she says about Seiko, since her existence was erased upon her death in Tenjin.
Cannot Spit It Out: Not only her feelings for Satoshi, but also the guilt she feels immediately after lashing out at Seiko. If she tries to apologize, she's hardly even able to get the words out, and neither she nor Seiko feel any better. In Book of Shadows, she actually has a coughing fit.
Despair Event Horizon: In Chapter 5. Your choices determine what happens to her: either a message from Seiko will eventually convince her that Seiko doesn't hate her and she rejoins the group, or she goes crazy and charges at the group while dragging Seiko's body behind her.
Driven to Suicide: Eventually, the horrors of the school push her past the breaking point and she threatens to hang herself just like Seiko was. Talking her down is necessary for that chapter's True End.
Hidden Depths: In-universe example in the PC-98 version. Everyone present is surprised Naomi can play the piano and is apparently very good at it. That doesn't get any other mention in any subsequent games, however.
Maybe Ever After: The True Ending in PC-98, where she has some alone time with Satoshi in their classroom and she invites him to come over to her place and see her play the piano.
Never Got to Say Goodbye: Naomi splits up with Seiko shortly after the two get into an argument. The next time she sees Seiko, she's hanging by the neck in a bathroom stall. Considering it was Naomi's fault they split up in the first place, she feels pretty bad about it. She later finds out that she was the one who did that to her, albeit whilst possessed.
Screw Destiny: Her attitude in Book of Shadows, both in the "World Loop" chapters and the chapter following Blood Covered's True Ending. By the end of "Engraved Seal", this becomes You Can't Fight Fate.
The Class Rep for 2-9, Ayumi is bright, cheerful, and absolutely loves scary stuff. Creepy stories, strange rituals... she loves them all, and can't resist taking advantage of her position to draw her classmates into her games. Especially Satoshi, since he's so funny when he's freaked out...!
Axe Crazy: In the Wrong Ends where she is possessed and you don't snap her out of it. She might shove Yoshiki down the stairs so hard his skull cracks, stab Satoshi with a pair of scissors, beat Naomi to death with her bare hands...
In the Corpse Party: Musume manga, towards the end, she really loses it. She stabs herself in front of Yoshiki again and again with an insane look.
Big "NO!": At the end of Book of Shadows, her sister gets her head chopped off right in front of her. Ayumi lets out a scream leading up to the ending credits of the game.
Big Sister Instinct: To Yuki Kanno, and to a certain extent, the other children who were victims of the 1973 Tenjin Elementary kidnapping and murder case.
Demonic Possession / Grand Theft Me: Her latent psychic powers attract spirits to her, but because she hasn't learned to control them yet, she is easily subject to possession. In the prologue of Blood Drive, she gets a lot better.
Many Spirits Inside of One: In Book of Shadows, she is literally fought over by other vengeful spirits because they see her as their only hope. This pisses off Yoshiki big time!
Honor Before Reason: Why she decides to go back to Tenjin Elementary in Blood Covered and why she tried to revive her friends in "Book of Shadows".
The Load: She gets possessed quite a bit. Though in "Book Of Shadows", she does get better.
Though to be fair to her, whenever she's not possessed or hyperventilating, she's acting as The Smart Guy who does the planning while Yoshiki does the heavy lifting. It's ultimately Ayumi's interaction with the various ghosts (including Naho) that allows the party to find their way back home.
Love Makes You CrazyAnd Evil: In a bad ending, Ayumi burns Naomi's paper, then beats her to death. While covered in blood, she laughs and praises herself. Though Naomi does have the last laugh.
In the Musume manga, Ayumi stabs Naomi's dead body again and again, then cuts it into pieces, pushes Yoshiki off a cliff, then attempts to kill Yuka. Though she was possessed the whole time. This even carries over in the PC 98 version.
Morality Chain: Yoshiki is hers, he keeps her mental state in check, and helps to keep her from having anymore FreakOuts, if he's away from her for too long, it never ends well.
Tsundere: She seems to be one for Satoshi and Yoshiki. She is known to have a crush on Satoshi and generally she scares him. While when she with Yoshiki, she is very rude to him. But it is hinted she might like him at the end of Blood Covered
Took a Level in Badass: In Book of Shadows. Especially in the prologue to Blood Drive, where she manages to force away possessions by herself and even prepares and chants up a spell to revive the dead.
Yandere: At the very least, she starts showing signs of Sanity Slippage in one bad ending. She actually burns Naomi's Sachiko charm (which she needs to get home), then kills her in a particularly horrific Wrong End. Naomi has the last laugh, though.
Despite having the Face of a Thug, Yoshiki is actually a pretty nice guy. Likes teasing Satoshi, but that's the norm among his classmates, anyway. After they're pulled into Tenjin, he vows to protect Ayumi at any cost.
All Love Is Unrequited: Though he cares for Ayumi, he thinks she's more interested in Satoshi. She may return his feelings later on, though.
Big Brother Instinct: Shown more in Book of Shadows where he loses Ayumi again, and on his way to find her, he stumbles across Mayu and Nana. For a little bit, he has to save and protect them until he finds Ayumi.Book of Shadows hints that he would probably be this way towards his own little sister, Miki.
Changed My Mind, Kid: Ayumi and Yoshiki are returned to their classroom by Yuki. Ayumi wants to return to save Satoshi and the others. If Yuka was was caught by Kizami (or if you choose to not to), Yoshiki refuses to go back. Naturally, he ends up going back anyway. It still leads to a Wrong End, though.
Delinquent: Most people think he's one, due to his dyed hair and his lack of interest in school. But he did used to skip a lot and smoke.
Driven to Suicide: In the original PC-98 game, he becomes suicidal if Ayumi dies. In one ending he tries to attack Satoshi before breaking down in tears and dropping the knife; in another ending he simply disappears, and Satoshi wonders if the guilt of leaving Ayumi behind was too much for him.
Kill the Cutie: In the anime OVA she's officially killed off by Kizami.
Also in her chapter in Book of Shadows, which show what happens to you if Kizami catches you in the original game: no matter what choices you make, you end up getting killed by either Sachiko or Yoshikazu.
Older than They Look: Though she's only a few years younger than the rest of the cast, the age difference seems particularly pronounced thanks to her much wider eyes and petite frame. She also acts much younger than she is, thanks to being Spoiled Sweet.
Potty Emergency: Happens to her. Unfortunately, the lack of working bathrooms doesn't do her any good. Eventually leads to a Potty Failure, courtesy of Kizami.
Protectorate: To her brother and to Yuuya Kizami. Too bad Kizami's a nutcase.
Spoiled Sweet: She may be spoiled, but dammit if she doesn't cause others to swoon over just how adorable she is.
Naomi's best friend, a cheery and irrepressible Genki Girl with a bit of a perverted streak. Or maybe it's just that she loves teasing Naomi...? Either way, she has a way of keeping her head up and looking on the bright side, even in the darkest of situations...
Stepford Smiler: She puts up a good front, but the truth is she's actually hiding a lot of sadness from her mother's disappearance. The same applies to getting stuck in Tenjin Elementary, where she acts cheerful to hide how scared she really is. This bites her in the ass hard when Naomi calls her creepy, saying that it in their situation it's pretty much impossible to be that cheerful.
Undying Loyalty: As literal as it gets. She actually saves Naomi from herself from the other side of the veil of death. Even after NAOMI HERSELF was the one that killed her (sure, she was Brainwashed and Crazy at the time, but still).
Energetic and popular with most of the guys, Mayu is particularly close to Sakutarou, with whom she shares a Like Brother and Sister rapport. With her family moving away, she's about to transfer out of Kisaragi, with the Culture Festival being her last day...
The Blank: In the trailers for Blood Drive, she appears as a spirit with a black hole where her face should be.
Cruel and Unusual Death: It doesn't get much crueler than ramming her into a wall at such a high speed that she's reduced to a pile of mush and organs. She is probably the most innocent character in the game (along with Yuka), and she gets the most brutal death by far.
Book of Shadows manages to make her death even worse...at least, from Mayu's perspective. Instead of being smashed into a wall and reduced to a pile of mush, she's slowly and excruciatingly torn apart by the ghost children. Even if it wasn't as gruesome as being smashed into the wall, you have to remember...a) the wall smashing was instantaneous, meaning there was minimal pain and suffering involved, and b) she's going to be feeling this for the rest of her afterlife.
And then again in the Blood Drive prequel chapter, when Ayumi and Naomi try to bring her back from the dead. It went badly. She writhes on the floor in agony as symbols appear on her limbs, which then explode, leaving her drawn and quartered.
Another classmate from 2-9. He's quite close to Mayu.
Axe Crazy: In the Tortured Souls OVA, he loses it when he realizes the corpse he liked the most was Mayu. He thinks Mayu is in his phone, and by killing others and taking photos of their corpse he is giving Mayu company.
Big Brother Instinct: Referenced in his spotlight chapter in Book of Shadows, where he muses darkly about how, while he's not particularly attracted to Yuka, seeing her scared and helpless was really exciting for him.
Nightmare Fetishist: He manages to (barely) maintain his sanity by taking snapshots of all the corpses he finds and admiring the handiwork He doesn't KILL anyone, but it's still pretty reprehensible. In Book of Shadows, he even begins to finger a corpse's wound.
One Wrong Ending in his episode of Book of Shadows implies that Sachiko is intentionally keeping him alive in the "Groundhog Day" Loop universe in hopes of cultivating this into full-on Ax-Crazy.
Ret Gone: As a result of dying in Tenjin, everyone outside of Satoshi, Naomi, Yuka, Yoshiki, and Ayumi has forgotten about his existence.
Determinator: Let's see... She gets a cabinet dropped on her back, her entire back is pierced with knives, and she's being baited by a sadistic ghost who tries to get her to beg for her own life over that of her students'. What does she do? Plead for him to leave her students alone. After she manages to get the cabinet off of her, she starts to wander around, bloody and injured, all while trying to hold her shattered right arm in place. We finally see her again in chapter 5, when she meets up with Ayumi... But the reunion is short lived; the floor ends up being a trapdoor, and Yui ends up holding onto the edge (with both arms no less) so Ayumi can climb up and be saved. As we learn in the Extra End of chapter 4, this is what finally leads to her Heroic Sacrifice. Yui-sensei is awesome.
Did Not Get The Guy: She had feelings for Tsukasa Mikuni, her friend in high school, that continued to today. Any chance she may have once had is gone, as she died and all memory of her is gone.
Dojikko: When not being a teacher, she is very clumsy. Although she was having a fever and cold when she showed said trait so it may have been a side effect.
Bitch in Sheep's Clothing: In Blood Covered. She is a very helpful character, her info was vital so everyone could escape Heavenly Host and was shown to be a really nice girl when she was still alive...until she reveals her ruthless and apathetic side both times she was confronted by Ayumi after their first encounter. Her notes reveal she posted the wrong info about the Sachiko charm so more people would get sent to Heavenly Host and practically sacrificed Sayaka in order to get to Heavenly Host to make the curse stronger so Kibiki would have a greater source material to report about and doesn't seem to show any remorse for her actions' repercussions until Ayumi reveals she killed Kibiki under the influence of the darkening. Although the "Purgatory" chapter in Book of Shadows has heavy evidence that Naho did so under Sachiko's influence, given she decided to end the investigations after realizing she bit more than she could chew and that she was being haunted by Sachiko after her investigations in the Shinozaki Estate.
Brainwashed and Crazy: Much like Naomi and Ayumi. Only Naho was already possessed by the darkening before she went to Heavenly Host. She found out about the Sachiko charm and Heavenly Host when she was investigating the Shinozaki Estate. However, Sachiko started haunting her since then and eventually she realized it was too dangerous to go on with the investigations. But when she was about to convey her decision to Kibiki, she found out he had already crossed over without her. Before she crosses over, Sachiko is still haunting her and The Darkening starts taking over, leading Naho to post the wrong info on her blog and turning Naho into the Yandere spirit from Blood Covered.
Broken Pedestal: To Ayumi. The instructions for the Sachiko charm were posted on Naho's blog... but the instructions were incorrect, ensuring that those who followed them would be trapped in the school. She was responsible for dozens of students being caught in the school and dying there...and the worst part is, it's entirely possible the curse would have ended entirely with the original school's demolition had Naho not posted the charm. However, "Purgatory" reveals she was Brainwashed and Crazy all along and actually wanted to end the investigations on Heavenly Host.
Dead All Along: At least she's honest about it. Most likely, she's retained her sense of self because of her psychic abilities.
Despair Event Horizon: She crossed it twice. The first one comes from Book of Shadows when she, after deciding to put the kibosh on the investigation realizing it's too dangerous to go on with it, comes home to tell Kibiki about it only to find out she was too late and that Kibiki had already gone on without her, and the second one when she finds out she succumbed to the darknening and killed Kibiki.
Laser-Guided Karma: She did it all for Kibiki...who she ended up killing when she was swallowed by the darkening.
Love Makes You Crazy, EvilAND Dumb: BIG TIME. Regardless of being influenced by The Corruption or not, everything that Naho did for Kibiki's sake after going insane only resulted in collateral damage in the long run. Going to Heavenly Host to rescue him ended in hers and Sayaka's death. In her insanity trance, her idea of helping Kibiki was posting the wrong info about the charm on her blog to trap more students in Heavenly Host so the curse would become stronger giving Kibiki a larger source material to study. That only made Heavenly Host stronger, making it impossible to escape unless Sachiko is appeased and sped up The Corruption taking over her which ended up killing Kibiki. More people being trapped in Heavenly Host was also a scenario Kibiki wanted to avoid.
Sanity Slippage: "Purgatory" shows she was a really nice girl when still alive, had a heartwarming friendship with Sayaka, and wanted to avoid people being harmed by Sachiko, that was haunting her since her investigations of the Shinozaki Estate. After she finds Kibiki's note at her desk telling he went on to Heavenly Host without her, when Naho realized how dangerous it was to continue with the investigation after she was cursed by Sachiko, she falls in despair. Before Naho and Sayaka prepare to go to Heavenly Host, she starts to show shades of her Yandere behaviour. Given she kills Kibiki under the influence of the Darknening, and how Sachiko is shown to have a degree of control over those under the influence of the Darknening such as Naomi and Yuka, she most likely was starting to feel its effects at that point.
Start of Darkening: Her descent into madness started when she came home after her guest appearance at her best friend Sayaka's show was hijacked by Sachiko, with the resolve to put an end to the investigation when the curse Sachiko placed on her became too dangerous...only to find Kibiki's note telling he went over to Heavenly Host without her. She screams and cries in absolute despair and can only resort to ask for Sayaka to perform the ritual with her so she can rescue Kibiki. She starts losing it afterwards. Between the time Sayaka returns home briefly to let her mother know she was going out and the time they pulled the ritual, Naho starts showing insanity traces that indicate Sachiko was influencing the Darkening within her when she posted the wrong info on her blog. The Darkening only got worse from there.
Used to Be a Sweet Kid: Would you believe that before going to Heavenly Host, she used to be an absolutely cheerful girl who was prone to make cat noises complete with gestures?
Well-Intentioned Extremist: Okay, maybe doing it all for your beloved mentor isn't that well-intentioned, but still. Although Book of Shadows indicates that she did so under the influence of The Darkening.
Even Evil Has Standards: Even he's disturbed by the thought of elementary schoolers being trapped in Heavenly Host.
Evil Cannot Comprehend Good: He can't comprehend the tough love his older siblings show him. He can't see they only mean well. All sees is the opressive siblings that don't let him have his way.
Freudian Excuse/Spoiled Brat: As a kid, he thought himself to be this misunderstood child opressed by his elder siblings. In reality, it's quite clear that he's basically throwing a massive temper tantrum because he's not getting his way. He can't understand tough love and for him, to be loved is simply to have people enabling his sociopath nature.
Gratuitous English: Tells Yuka to "RUN, RABBIT, RUN" just before his death. If he catches you, he says "I'VE GOTCHU!"
Not So Different: An extra chapter in Blood Covered has him meet Morishige when he trips and drops his phone, at which point he glances at the screen for a moment and finds one of Morishige's corpse pictures. After asking if that was Morishige's doing, he tells him "I feel we're cut from the same cloth".
Defiant to the End: He fights off Kizami so Yuuka can run away and rather than be in despair when faced with death, he just tries to talk Kizami out of his sociopathy.
Dying Moment of Awesome: He punches Kizami when he's been stabbed prior to that. It ends up saving Yuka in the long run.
It's All My Fault: Somewhat blames himself for Kizami's sociopathic nature since, as his childhood friend, he didn't call him out on it sooner.
Not Quite Dead: Kizami stabs him and kicks him into a pit. Later, when Yuka realizes that Kizami is dangerous, she runs away to the room Kurosaki fell into. When Kizami catches up to her, Kurosaki punches him. Unfortunately, he's still too injured to do much else, so Kizami kills him. We don't see or hear it, but we see the results: It's rather messy.
A writer of mystery novels researching what really happened in the 1973 kidnapping and murder case. He went to Heavenly Host to investigate it and how it connects to the 1973 kidnapping and murder case.
All-Loving Hero: He didn't want Naho to go with him to the investigation because he didn't want to risk her being trapped in Heavenly Host. He also worried about other people getting trapped in it. Sadly, Naho would end up causing both.
Badass: He made some pretty idiotic decisions such as leaving Naho behind and going to Heavenly Host on his own, when he doesn't have any spiritual powers like Naho has, before more info could be gathered about it, even if he had her well being in mind. But still, to go over to Heavenly Host on his own volition takes balls of adamantium. He survived for quite a while as well. Until Naho was taken over by The Darkening and killed him.
Idiot Ball: Even though he wasn't aware that he was biting more than he could chew in regards to Heavenly Host's investigation, leaving Naho, AKA the girl with psychic powers when he has none, behind when going to Heavenly Host proved to be a bad move in the long run, even if he did it out of concern for her well-being. Even Naho thought it was stupid. It's like facing off Ganon without the Master Sword.
Heroic Sacrifice: In Book Of Shadows, an already dying Fukuroi distracts Yoshikazu so that Mitsuki can get away, though it's ultimately Kizami who finishes him off and ends up rendering Fukuroi's sacrifice moot.
The secretary of the student council at Byakudan High School. She has a strong-mind, and a somewhat na´ve personality. Recently dumped her boyfriend after she discovered he was cheating on her with three other women.
Badass: Putting up an admirable, if ultimately moot fight against Yoshikazu in Book of Shadows paints her as such. Her denying Kizami the satisfaction of seeing her squirm as he killed her cements it.
Cool Big Sis: In presence, she gives off this vibe to her class and the student council.
A seventh grader at Musashigawa Girls' Junior High. Her story is told in the Extra Chapter 1, where she agrees to help a ghost find the items that were taken from him. In chapter 5, Satoshi, Naomi, and Yuka find her skeletal remains in the Dissection Room.
Cruel and Unusual Death: Book of Shadows reveals how she died while you control Sayaka. It isn't pretty. Both her legs were amputated, then she is dragged into the dissection room while she's still alive by Yoshikazu and put on a table, where he proceeds to pull out her tongue with large pliers. She only dies once the tongue comes out and she bleeds to death.
A seventh grader at the same school as Nana. Although she and Nana are in different classes, they are old friends. In chapter 5, Satoshi, Naomi, and Yuka find her name tag (but not her body) in a bucket in the Dissection Room. Book of Shadows reveals that she was cooked alive in burning hot oil.
A young man who attended Kisaragi Academy six years ago with Yui. They apparently dated, but never even kissed.
Determinator: Nothing seems to faze this guy. Not even Yoshie.
The Ladys Favor: Gender-inverted: He lends Yui the pencil he used for his high school entrance exams for good luck during her college entrance exams. He tells her that he's not letting her keep it. He needs it for his exams, too.
Understanding Boyfriend: He is very much this to Yui, even though they weren't dating during his canon appearances.
A student who attends Byakudan High School, and who has a one-sided rivalry with Kizami.
Establishing Character Moment: When the entrance door is open and they're presented with a chance to escape, Kai doesn't hesitate to leave everyone behind thinking solely of his survival. Then, to twist the knife in, he makes a shallow attempt to charm Touko into coming with him when he showed no interest in her even before they performed the Sachiko ritual.
A student who attends Byakudan High School. He enjoys video games and is good friends with Ohkawa. We first meet him in Extra Chapter 4 of Blood Covered, but it isn't until Book of Shadows that we see him in the main game.
Unwitting Instigator of Doom: He loses his leg in a trap and bleeds to death. His death causes Ohkawa to go nuts. After Kizami pushes his body down the stairs in an attempt to prove that he's dead, Ohkawa panics even more, calling Kizami a murderer. This causes Kizami to have his "epiphany": It doesn't matter whether the school kills you or he does.
A student who attends Byakudan High School. He likes cute things and video games. We first meet him in Extra Chapter 4 of Blood Covered, but it isn't until Book of Shadows that we see him in the main game.
Freak Out: He doesn't take Katayama's death very well. He insists that he's still alive and needs to get to the hospital. Kizami attempts to "help" him see the truth by pushing Katayama's body down the stairs to prove he's dead. This only freaks Ohkawa out more.
Nice Job Breaking It, Hero: In a way. Kizami isn't exactly sane, but his "Whether you're killed by the ghosts or killed by me...makes no difference" epihpany was caused by Ohkawa calling him a murderer during his Freak Out.
Exposition Beam: Once Ayumi and Yoshiki give her and the other two their respective body parts back, she sends them back to the classroom. Once there, she shows Ayumi the truth about how she and the others were murdered. Unfortunately for Ayumi, it's through Yuki's eyes.
Not Evil, Just Misunderstood: While initially extremely dangerous, she isn't really doing evil acts willingly; she's been corrupted by her violent death and by the school itself. She becomes very helpful to the heroes once she's appeased.
Parting Words Regret: Though we never learn any details, the last words she exchanged with her mother were a huge argument.
The supposed only survivor of the 1973 Tenjin Elementary kidnapping and murder case, she provided the testimony that got the killer arrested. After the incident, her family apparently moved away, and her whereabouts are currently unknown.In actuality she is a malevolent spirit, and the one behind the 1973 incident. After possessing the supposed killer and making him kidnap the other children, she killed them herself and laid the blame on him.She herself was the victim of an incident in 1953, where she was killed after witnessing the headmaster of the school kill her mother, who then went on to hide her remains in the basement. Her hatred towards the headmaster and envy towards those still alive ended up twisting her personality into what it is in the game.
Bitch in Sheep's Clothing: Sometimes she likes to play the ally, or act like a helpless child, before turning around and killing people. In one bad end, she pretended to be Mitsuki by wearing her face as a mask, and briefly flirted with Morishige before revealing herself. Just to mix things up.
Morality Pet: Subverted. Both Blood Covered and Book of Shadows imply that on some level she genuinely likes Yuka, and she actually saves Yuka from Kizami in Blood Covered's True Ending path. But Sachiko's too Ax-Crazy for this to actually protect Yuka — in the Mire chapter from Book of Shadows, it's revealed that it was actually Sachiko who killed Yuka after Kizami catches her in that Bad End of the original game.
Yandere: At least at first. Sachiko started off killing so that her mother would have company, but after a while she began to enjoy it too much. After a while, Sachiko was just too far gone to stop. Yoshie's diary notes that Sachiko probably didn't even remember her own mother.
A teacher at Tenjin Elementary, and the son of the headmaster. He was arrested for the kidnapping and murder of the three victims in 1973 but was actually being manipulated by Sachiko.
Drop the Hammer: His zombie occasionally appears with a giant mallet. God help you if he catches you.
Friend to All Children: What he was prior to kidnappings. In Chapter 6 of Book Of Shadows, he shows a lot of reluctance to kill Yuka despite Sachiko's orders. Teenagers are fair game, though.
Insanity Defense: How he avoided going to jail. He actually was pretty insane at that point, so a mental hospital was probably the best place for him. However, he ended up escaping, broke into the school, and hung himself in the basement.
Man Child: At the time of the incident, a disease had apparently caused him to regress to a childlike mental state, to the point where he couldn't even convey his thoughts. People noted that he was still a rather kind person even when he reached that point, so it was almost hard to believe that he'd commit such horrific murders. Which makes sense, seeing as he didn't commit the murders.
Sins of Our Fathers: Yoshikazu's mental illness and regression are heavily implied to be caused by being cursed by Yoshie, Sachiko's mother. When you find her diary in-game, Yoshie mentions her hatred for Principal Yanagihori is so great, she cursed him and everyone in his bloodline. This basically means he's the very first innocent victim of Yoshie's and Sachiko's rage: even before the murder of the three children, Yoshikazu was already a powerless puppet under Sachiko's thrall.
Sachiko's mother, she was a doctor and a health official for Tenjin Elementary. She died after falling from a stairway landing in the school. She was the other victim of the incident in 1953. After she escaped being raped by the principal, he accidentally caused her death whilst chasing after her in an attempt to keep her quiet. Her death was subsequently covered up as an accident.She appears in-game as the ghost in the infirmary.
Bigger Bad: The final chapter of Book of Shadows shows that she may have been the one who created the supernatural version of Heavenly Host in the first place, using a ritual from the Book of Shadows, a powerful grimoire passed down in the Shinozaki family. It is also hinted at that her magic may have been involved in Sachiko's death. And she was the one who created or at least discovered the ritual that would become the Sachiko Ever After charm eventually... Prior to their demise.
Adults Are Useless: Played with in Book of Shadows. She doesn't believe anything Naomi says about Seiko and thinks that Naomi has simply created an imaginary friend. However, this is justified as Seiko was erased from existence following her death in Tenjin, and Natsumi does try to get help for her daughter by speaking with a psychiatrist, doing the best she can with the information she has.
Mayu's mother. She is sad about her daughter having to transfer and resents her workaholic husband for not protesting against his job transfer.
One of Seiko's younger brothers.
Promotion to Parent: In Book of Shadows, we see he is this to his younger siblings. It is unclear if he was always this or if the recon of Seiko made him this.
A girl from Misato Municipal Brotherhood High that Satoshi and Yuka encounter in Chapter 3. Despite their attempts to communicate with her, she doesn't really respond. Her Name Tag is found in Chapter 5 indicating that she either died shortly after Satoshi and Yuka left or was already dead.