Stringy-Haired Ghost Girl: Not that she's a ghost, but her resemblance to Sadako contributes a lot to her difficulties in getting to know others, since she creeps them out.
Yamato Nadeshiko: Sawako is a fine example of this trope. First of all she looks the part with the black hair and Hime Cut. Second she's kind and helpful to the point of Extreme Doormat. Third she takes turns cooking for her family and is a good cook to books.
Sawako's classmate and the most popular guy in school. On the first day of school, he got lost and was given directions by Sawako. He has since admired her and developed a crush on her, and is apparently the first person to ever stick around Sawako long enough for her to clear up a misunderstanding, and give her a confidence boost necessary to make more new friends.
According to both of them, that he's "a person who can't leave anyone in trouble alone", and given how popular he is among the girls - how many hearts have you already broken that way, Mr. Nice Guy?
Arguably Sawako's closest friend along with Yoshida. At face value, Yano seems like a perfect Alpha Bitch, but is actually deeply concerned for her friends' wellbeing.
Alpha Bitch: Subverted. She's fastidious about her appearances and socially adept, but turns out to be very kind.
Manipulative Bitch: In a (usually) positive sense. She would make a great scheming shoujo manga villian, but fortunately she's on Sawako's side.
Not What It Looks Like: In the manga, when Pin sees Ayane with a swollen cheek (after having been slapped by her college ex-boyfriend for suggesting to break up), he automatically assumes a guy in the class did it.
Sugar And Ice Girl: Considered as 'cold' and 'arrogant' by her classmates at first, but is really kind and caring person... unless you make an enemy out of her, that is.
Urban Legend Love Life: While rumored to have got around in middle school, Ayane has a college boyfriend. However, when she suggested breaking up, her boyfriend slapped her. Despite his apologies, she broke up with him anyway because of how clingy he had been acting.
Younger than They Look: As the author herself pointed, that Yano looks about ten years older than she is.
Also, at the first day in the high school, Chizuru referred to her as 'sempai'.
Yano's other half, and the more physical of the duo. Yoshida shares most of Yano's concerns regarding Sawako. She shows great athletic prowess and occasionally suffers lapses in "ladylike"-ness. Yoshida also displays romantic interest in Ryu's brother at first, and, seemingly and unbeknowst to herself in Ryu too.
Best Her to Bed Her: From the early in the series when we learn that Ryuu is the only guy she's never defeated, we can guess what's going on. And then, in chapter 51...
Green-Eyed Monster: Now that she's starting to realize that she has feelings for Ryu, she can get rather irritated when the topic turns to other girls having an interest in him.
In fact, she's so used to dressing up in boyish clothing her plan to wear a mini-skirt was a big plot point.
She actually wears a dress when attending Tooru's wedding.
Trademark Favorite Food: Yoshida developed a love for ramen after constantly visiting Ryuu's family ramen shop in her childhood. A background conversation even details her wish to "be a ramen" when she grows up.
Mostly silent, athletic, and non-judgmental classmate of the others. The few things he does say range from hilarious non-sequiturs to insightful meditations on human nature. Has a crush on Chizuru.
The Chick: By default, and a rare male example, in that he's the first to defuse intense situations among his friends.
Spiky-haired, slightly delinquent-looking young substitute teacher of Sawako's class. Usually acts loud, cheerful and full of himself and likes to order around Ryuu and Kazehaya, whom he's known since the latter's childhood. Also has a strong fear of paranormal things and is extremely suspicious of Sawako.
And in spite of constantly flirting with older women — especially the tour guide at their class trip to Okinawa —he reveals to Ayane that he has seriously liked girls in the past.
Hot for Student: Invoked and shot down by Pin himself, since in reality Kurumi never had any intention of confessing to him. On the other hand, a lot of Ship Tease occurs with Ayane.
Pet the Dog: In Chapter 45, when Ayane confesses that she doesn't believe she's kind (compared to Sawako and Chizu) because of how cunning she can be in front of Pin, she dreads another Ted Baxter lecture from a surprisingly quiet Pin, who instead stares at a candy Ayane gave him because he was whining about not getting one after the festival. Then, Pin literally pats Ayane on the head and reassures her that she is kind before walking up the stairs, leaving Ayane (and the readers) speechless that Pin could actually BE a nicer guy than he usually shows.
Manipulative girl with a crush on Kazehaya. She prefers the nickname "Kurumi," and uses this level of familiarity to gain Sawako's trust and sympathy. Her plan backfires, and instead leads Sawako to acknowledge her own feelings for Kazehaya. She also starts rumors about Yano and Yoshida, and pins them on Sawako to break up their friendship.
Actor Allusion: Season 2 Episode 0 shows her writing Sawako's name in her "Bastards Who Call Me Ume Note" with due gravitas.
Because You Were Nice to Me: As it turns out, her reason for liking Kazehaya isn't so different from Sawako's. He was the only person to treat her as someone with feelings, and saw through her happy facade and noticed that she was hurting back in middle school.
Freudian Excuse: In short, Kurumi grew dishonest and bitchy after learning just how two-faced the girls around her were.
Heel Face Turn: Recent chapters finally give her a sort of heartwarming redemption, when she defends Sawako from a bunch of girls jealous of Sawako's relationship with Kazehaya.
Humiliation Conga: Soft-shoujo level, but Episode 13 sure gave her a hard time...
Romantic False Lead: Subverted. Kurumi tries to win Kazehaya's affection, and it's the failure of her ploy which brings Sawako and Kazehaya even closer.
Ship Tease: Recently, she's been getting a lot of screentime with Kent.
A new classmate of Sawako in her second year, Kent becomes interested in Sawako and tries to help her connect to the class. Sawako's friendship with Kent causes Kazehaya to become jealous.
I Want My Beloved to Be Happy: Kent seems to have reconciled with the fact that Kazehaya and Sawako are a couple, but he is depressed when he sees them having fun together at the beach in Chapter 51.
Not What It Looks Like: When Kazehaya stumbles upon Sawako crying and Kent holding her by the arms, he assumes the worst out of a very confused Kent, who was just trying to comfort Sawako.
Only Known by Their Nickname: For the record, his actual name is Kento. Names of Japanese origin like Kento are written with kanji, and should be fully spelled out when romanized. The name Kent, on the other hand, is vaguely implied to be a nickname. Kent is the name seen most often (whether it be due to amateur translation or something else), so it has stuck with most of the fanbase.
Romantic False Lead: He sincerely wants to help Sawako connect more with her classmates, but his implied interest in her and the damage he does to Sawako and Kazehaya's relationship (though unintentional, because when Kazehaya told Kent that he liked someone, Kent told Sawako that she should give up on Kazehaya, unaware that Kazehaya likes Sawako) makes him one.
Ship Tease: Seems to be heading there with either Kurumi or Ayane.
Spell My Name with an S: See above. Most fans are confused as to whether his real name is Kent or Kento.
Minor Characters
Soichi "Jo" Jonouchi
One of Kazehaya's close friends. Joe idolizes Kazehaya and is often in his company. He is oblivious towards the budding romance between Kazehaya and Sawako.
Moment Killer: Causes this several times unintentionally, including interuppting Kazehaya and Sawako in Chapter 39, following the latter's confession to Kazehaya.
Oblivious to Love: Oblivious towards Kazehaya's and Sawako's feelings for each other, and the the fact that Ayane just isn't interested in Joe, himself.
Eriko "Ekko" Hirano and Tomoko "Tomo" Endo
Two classmates who Sawako befriends.
Chekhov's Gunmen: These two were actually shown to have witnessed Kurumi's rumor spreading in the manga
