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.
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.
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.
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.
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...!
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.
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.
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...
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.
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.
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.
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 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.
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. Naho knew this.
Freak Out: When Ayumi reveals that she killed Kibiki.
A young man who attended Kisaragi Academy six years ago with Yui. They apparently dated, but never even kissed.
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.
A student who attends Byakudan High School, and who has a one-sided rivalry with Kizami.
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, 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.
Evil Cannot Comprehend Good: In the manga, she is literally incapable of understanding Yui's love for her students. This...doesn't end well for Yui.
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.
Face-Heel Turn: She ends up becoming Sachiko's successor as the primary malevolent spirit haunting Tenjin in one of the Bad Ends, presumably against her will. This likely happens in the other endings where Sachiko is appeased.
The Unintelligible: Because her tongue is missing. Once she gets her tongue back, you can understand her.
A victim of the 1973 Tenjin Elementary kidnapping and murder case, she appears as a ghost with the top of her head missing.
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.
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.
Playing Against Type: Despite being the main antagonist and a young child murderer, her voice actor was most known for playing Pikachu in Pokémon, who was pretty caring of anything young. Practically taking this Up to Eleven!
Troll: 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.
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.
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.
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.