Characters who appear in Gyaru-Sen.
An average boy trying to make it through high school when before he rediscovers his childhood crush has changed.
- Above the Influence: Whenever one of the girls gets drunk or is otherwise not in full possession of her faculties, Sora never once tries to take advantage of them. Not deliberately, anyway.
- Accidental Pervert: It's a rare chapter where Sora doesn't end in a perverted situation with one of the girls against his will.
- Chivalrous Pervert: While Sora does occasionally indulge himself sexually with some of the girls, he never once sees them as sex objects, and only does so when given verbal consent.
- After he rips Tsukasa's shirt open and realizes that she's a girl, he quickly pins her to the ground so that no one else will notice. When she later declares her love for him, Sora gently turns her down since he still has a crush on Suzune.
- When Uzuki gets drunk during their class's Christmas party, Sora's first instinct is to get her out of the room before she starts getting frisky in front of everyone else. Then, when Uzuki finally falls asleep after ending the night on a high note, he cleans her face and leaves her with her friends.
- Crazy Jealous Guy: Becomes upset at the possibility that Suzune has dated other men.
- Extreme Libido: Meeting Suzu-nee years later as a seductive gal jump starts his puberty, to the point where in the early chapters he frequently had to ‘deal with’ his Raging Stiffie. As the story goes on, it becomes a more downplayed example; he can’t bring himself to turn anyone down, but otherwise he can keep his head in erotic situations.
- The Generic Guy: As with most harem protagonists, he’s rather lacking in the personality department. In chapter 31, Suzune says he likes fish, which combined with his inclusion in the Biology Club would imply he is something of a Nature Lover, and he's later revealed to have taken Judo as an elective class, but that’s about it.
- My Greatest Failure: Suzune unwittingly aroused Sora as a kid while washing him; not understanding what was happening, Sora lashed out at her and told Suzune that he hated her, after which she stopped coming over to babysit him. Years later, he hasn't stopped regretting it.
- Oblivious to Love: He’s concerned about a Relationship Upgrade with Suzune more than the other women in his life. In the cases of Uzuki and Hitsuji, it’s less obliviousness and more willfully ignoring the sexual escapades to avoid awkwardness.
- Perverted Sniffing: Sora sniffs Suzune's underwear while she's in the shower. When she catches Sora as he's about to lick it, she calls him disgusting, which hurts Sora far more than if she had yelled at him. After he shows her how sincerely sorry he is, Suzune decides to forgive him.
- The Pornomancer: Ever since meeting with Suzune for the first time in years, lustful women just can't seem to not find their way towards Sora.
- Precocious Crush: Developed one on Suzune when he was younger; after they meet again for the first time in years, it is slowly rekindled.
- Secret-Keeper: After he realizes that Tsukasa is actually a girl, he quickly figures that she has her reasons for hiding it and pins her down in such a way that no one else can notice before throwing the match against her. Tsukasa is touched by the gesture and falls in love with Sora for it.
- Skeptic No Longer: When told by Uzuki that the old school building is haunted by the ghost of a schoolgirl, Sora immediately assumes it might well be, having had his own experiences with ghosts at this point.
- Their First Time: He finally has sex with Suzune in chapter 54. Unfortunately, after all the foreplay, it lasts for about one second, much to Sora's utter embarrassment. He then gets cockblocked by his friends showing up before he can try again.
- Your Favorite: Back when Suzune used to take care of Sora, she used to cook stew for him, the only dish she could make properly. While Sora always complained that Suzune couldn't cook anything else, he still loved her stew. Eating it again after several years brings Sora to tears.
Formerly Sora's babysitter, she returns to his life as his Physical Education teacher, having drastically changed her look since the last time they met.
- Be Yourself: Suzune encourages Sora to embrace his own feelings when he's aroused rather than run from them.
- Gyaru Girl: Of the Ganguro type. By her own account, she became a gyaru because she wanted to "become strong". When she went to Hitsuji for advice, she told Suzune that changing her appearance would change her mind; Suzune tried the gyaru look and decided to stick with it since she felt comfortable with it.
- Hot Teacher: A lot of the boys in Sora's class find her attractive, which is probably the main reason Samejima insisted that she be the Biology Club's advisor.
- O.O.C. Is Serious Business: Suzune is usually seen with a confident smile on her face no matter what she's doing. When she winces while she's having sex with Sora for the first time, it strongly implies (along with Sora's mental comment that she's surprisingly tight) that she's actually a virgin.
- Secret-Keeper: Apparently she already knew that Tsukasa was a girl before Sora did (or at least figured it out on her own).
- Sensei-chan: While her relationship status never really comes up, Suzune dresses like a gyaru while in her early twenties, which endears her to the male students. She's also perfectly okay with hanging out with the students in a less-than-formal manner.
- The Tease: Repeatedly uses Sora as her boytoy. She does it so often that he can't tell whether she likes him back or not.
- Used to Be a Sweet Kid: Something happened to change her from a sweet Girl Next Door into the Gal we see at the start.
One of the most popular girls in her class, she can get all the boys to do her bidding... except for Sora.
- Bad Influencer: Not bad, but incredibly narcissistic, using her platform on Instagram mainly to appeal to her vanity.
- Can't Hold Her Liquor: Gets drunk pretty easily, which makes her lose most of her restraint. Just eating alcohol-flavored chocolates is enough.
- Clingy Jealous Girl: Uzuki does not take it well when Hitsuji tries to warm up Sora with her body after he almost drowns. That's something Uzuki can do herself, thank you very much.
- Cute Clumsy Girl: Only in front of Sora, which frustrates her to no end.
- Everyone Has Standards: Even though she has good enough reasons to not like Sora (consciously, at least), Uzuki is still the first to run to his aid when he gets cramps and starts drowning.
- Extreme Libido: Like how Suzune awakens Sora’s hormones, he awakens Uzuki’s. Before him she was more of The Tease, happy to use her sexuality for attention, but not particularly interested in sex itself. After him, she mentions she has started masturbating much more and can barely be around him without wanting to get frisky.
- Gyaru Girl: Of the Kogal type, in contrast with Suzune's Ganguro style.
- Hollywood Tone-Deaf: Can't sing karaoke very well, though this might be because Uzuki was drunk at the time.
- I Love You Because I Can't Control You: What starts her interest in Sora is that he is too focused on Suzune to pay her any attention.
- Ineffectual Death Threats:
- Threatens to kill Sora if he ever tells anyone that she used him to get off while they were both hiding in a locker.
- Threatens to kill him again if he should turn around while Uzuki is rubbing her chest against Sora's back to warm themselves up after their boat almost sinks. While the two of them are shirtless.
- Kissing Under the Influence: She's toyed with Sora both while drunk and possessed by dead pets.
- Lonely Rich Kid: She lives at the top of a very high class apartment, yet the first thing she says after walking in is that no one is ever there.
- Masturbation Means Sexual Frustration: After her first "accident" with Sora, Uzuki becomes outraged and storms off to the restroom, where she proceeds to masturbate while wondering why she's so wet. She's then shown to masturbate daily while thinking about Sora when she's at home.
- Pet the Dog: Doesn't hold it against Sora for losing against Tsukasa, and even compliments him for having tried his best.
- Smitten Teenage Girl: Finds herself falling head-over-heels for Sora. At first she tries to be Tsundere about it, but after chapter 27 they are openly dating.
- Somebody Doesn't Love Raymond: When Sora initially pays her no attention at all, Uzuki becomes upset and determined to rectify that. She gets far more than she bargained for.
- Stuffed into a Locker: In a hurry to hide from Samejima, Sora drags Uzuki into a locker with him. Things quietly escalate from there.
- Tsundere: Initially acts cold and hostile towards Sora even though she masturbates while thinking about him. As they spend more time together, however, Uzuki becomes somewhat nicer towards him.
- Unsuspectingly Soused: Uzuki demands that Sora give her something to drink while they take cover from the rain in a cave and Sora gives her a bottle of tea. Turns out, Sora's friends put booze in it without his knowledge, which gets Uzuki plastered.
- Warts and All:
- An implied reason for why she goes from just wanting Sora to pay attention to her to actually wanting to date him. As a popular gal and Instagram model, she is use to presenting a perfect image of herself. But he has seen so much of her clumsy side that she can actually be more relaxed with him.
- In chapter 10, she turns down a handsome, star athlete asking her out and explains to her friends it’s because they don’t know each other. In contrast, she asks Sora out after he tells her in spite of knowing how clumsy and perverse she can be, he still likes her.
- What Did I Do Last Night?: She can't remember what she did while drunk once she sobers up. Good thing, too, or she would probably die of embarrassment.
- What Is This Feeling?: While Uzuki becomes disgusted with Sora following their first accident, her body feels something else entirely, leaving her confused as she starts masturbating.
The School Nurse. She knew Suzune since they were in high school.
- Blind Without 'Em: Apparently is so nearsighted without her glasses that she mistakes Sora for a monkey when she finds him after he accidentally enters the women's bath. Maybe.
- Covert Pervert: She hides it behind a veneer of clumsiness, but is just as perverted as the rest.
- Hidden Depths: Though she's primarily a nurse, Hitsuji also appears to have some experience in exorcism.
- Hospital Hottie: She's the incredibly attractive School Nurse.
- It Amused Me: More often than not she enjoys putting Sora through lewd situations because she enjoys watching him squirm, even when she's not directly involved.
- The Klutz: While Hitsuji tends to be pretty clumsy, it's strongly implied that she's just pretending in order to toy with Sora.
- Love Potion: Frequently puts aphrodisiacs in the drinks she offers Sora.
- Mrs. Robinson: She’s not the usual age for this trope (at best she’s just entering her mid 20s), but otherwise she fits perfectly, wasting no time in frequently seducing Sora.
- The Redeemer: She exorcizes Sachi the first time by pampering her while she's possessing Sora, which leaves Sachi's heart fulfilled and allows her to pass on. For a time.
- Secret-Keeper:
- She knows about Sora and Suzune's relationship, but keeps it to herself and supports it (not that it stops her from occasionally having fun with Sora herself).
- She also keeps to herself that she made Sora climax by massaging his prostate.
- The Tease: One of her hobbies is teasing Sora sexually, often making it look like an accident.
The English teacher and advisor to the English Social Studies Club. Sees Suzune as her rival, for some reason.
- Accidental Pervert: While she's just as prone as Sora to landing herself in perverted situations against her will as he is, losing all vestige of dignity in the process, Althea at least finds herself able to defuse them. She's just repeatedly overpowered by her own Extreme Libido and escalates it further.
- Covert Pervert: Althea is surprisingly perverted for someone who carries herself in such a dignified manner, but she will deny it every time.
- Gratuitous English: Occasionally speaks in English while expressing herself.
- Not So Above It All: Constantly tries to uphold the image of a Proper Lady, but is just as perverted as the rest when her switch is turned on.
- Potty Failure: After Uzuki scares the hell out of Althea while she's checking out the haunted house, she wets herself and the floor.
- Proper Lady: She is very English and presents the image of a sophisticated, cosmopolitan lady perfectly, but it’s subverted whenever her libido gets the best of her.
- Unknown Rival: Her rivalry with Suzune is pretty obvious to anyone who pays close attention. Anyone but Suzune herself, that is.
- What Is This Feeling?: Quoted almost word for word in her first chapter when a masked Sora accidentally lands on Althea's crotch and she becomes aroused as a result.
- Why Did It Have to Be Snakes?: She really can't stand bugs.
A member of the English Social Studies Club, and secretly a girl.
- Aggressive Submissive: While usually confident and imposing, Tsukasa becomes attracted to Sora after he pins her to the ground during their fight, which awakens in her a sensation she had never felt before.
- Arrogant Kung-Fu Guy: Er, girl, anyway. During her match with Sora, Tsukasa calls him pathetic for always doing Suzune and Uzuki's bidding and acts like she's stronger than him (then again, she is). She changes her attitude after Sora selflessly keeps her real gender a secret.
- Dogged Nice Girl: After Sora turns down Tsukasa's Love Confession she accepts it without issue, but becomes determined not to give up on him.
- Even the Girls Want Her: Naturally, given that they think she's a handsome man.
- First Love: Sora becomes this for her after their first encounter.
- Fundoshi: Wears one under her pants as part of her crossdressing gimmick.
- Help, I'm Stuck!: After Tsukasa scares off a peeping tom who was trying to record her by punching a hole in the wall, she reaches out across the hole to grab the camera. She then asks Sora to pull her out after she gets stuck, leaving him incredulous that such a cliché is actually happening.
- I Want My Beloved to Be Happy: When Sora can't reconcile his feelings for past and present Suzune, Tsukasa makes out with him for a bit in a bid to help him understand that liking both versions of Suzune just means his feelings are more genuine. She later shows slight regret at sending Sora to her rival, but doesn't dwell much on it.
- Kissing Under the Influence: When Uzuki removes her hand from a Ouija Board before the seance is completed, she and Tsukasa become temporarily possessed by the spirits of Tsukasa's dead cats. They start toying with Sora after accidentally covering him with catnip.
- Love Confession: After Sora wakes up in the infirmary following their fight, Tsukasa kisses him and asks him to become her boyfriend.
- Please Put Some Clothes On: After Sora pulls her out of a hole in the wall (that she made), she becomes more concerned with Sora's nosebleed than the fact that she's wearing nothing at all, and ignores his protests to put something on.
- Punch a Wall: When Tsukasa catches a glimpse of someone trying to record her while she's changing through a hole in the wall, she smashes the wall open with one punch and sends the perpetrator running.
- Samus Is a Girl: When first introduced, Tsukasa is made to look like a handsome young man. Sora only realizes Tsukasa is a girl when he accidentally pulls her shirt open in the middle of a fight and sees her tightly-bound chest. He then pins her to the ground in order to keep it a secret from everyone else.
- Sarashi: Binds her chest in an effort to pass herself off as a man. Somehow it works.
- Secret-Keeper: Quickly figures out that the person Sora has a crush on is Suzune, but keeps it to herself.
- Wall Pin of Love: Does a kabedon on Sora and holds his chin while proposing to teach him martial arts.
- Wholesome Crossdresser: It's tradition in the Saginomiya family to dress as the opposite sex until you become of age or fall in love (in order to ward off evil spirits). Tsukasa pulls it off quite well.
The ghost of a perverted schoolgirl.
- Bespectacled Cutie: Being dead did nothing to improve her eyesight.
- The Ditz: Somehow forgot that the cursed School Sport Uniform once belonged to her.
- Fetish: At least one of them involves doing stuff in a School Sport Uniform, such as being tied up and blindfolded while sitting on a balance beam. She fantasized about such things while wearing one for so long that it became cursed.
- Friendly Ghost: If a little perverted.
- Gender Reveal: No one could be blamed for thinking that the ghost haunting a book about sex positions was a male, especially after stating that they intended to enjoy doing Hitsuji until exhaustion by using Sora's body. Sora was very surprised to learn it was a girl.
- Girlish Pigtails: Has her hair parted into two braids.
- Given Name Reveal: Her name is only revealed in her second appearance.
- Haunted Fetter: Sachi originally haunts a book about sex positions, allowing her to possess anyone who tries to read it.
- Here We Go Again!: After Hitsuji and Sora exorcize Sachi, they leave to eat yakiniku. Then Uzuki finds her book...
- Lovable Sex Maniac: She's such a pervert that it quite literally keeps her bound to the world of the living.
- The Power of Lust: Her horniness is quite literally the source of her power: the hornier she gets, the stronger her ties to the world of the living. When a "very erotic and easy to possess girl" (who Sora correctly guesses refers to Uzuki) finds her book after her exorcism, Sachi becomes so horny that her attachment to this world becomes renewed. After her second exorcism, which involves arousing Hitsuji while she's wearing Sachi's cursed School Sport Uniform so that she can feel it in her own body, Sachi becomes able to touch physical objects and move them with her mind. Sora guesses that at this rate Sachi won't be going to Heaven any time soon.
- Power Perversion Potential: When she possesses Sora's body, she eventually tries to use it to have sex with Hitsuji.
- Psychic Powers: Has limited control over physical matter: she destroys Sora's pants during her second exorcism, and gains telekinesis afterwards.
- Suspiciously Specific Denial: Insists that she's not interested in anything sexual per se and that it's just intellectual curiosity. Sora doesn't buy it.
- Synchronization: When Hitsuji is made to feel good while wearing Sachi's School Sport Uniform, Sachi can feel it, too.
- Unfinished Business: Sachi really wants to put into practice the sex positions in the book she found.
A delinquent girl with a soft spot for cute animals.
- Behind the Black: Sora initially doesn't notice her because she's hiding under a desk. When he's later surprised by her presence, Maho points out she's been in the room the whole time.
- Better with Non-Human Company: Maho can't seem to get along with fellow humans, and as such goes out of her way to distance herself from her fellow students. Dogs are a different story, though.
- Caught in the Rain: How she ends up getting Sora's standard treatment. The two run into a storage shed to take shelter from the rain, one thing leads to another, and...
- Coat Cape: Hangs her jacket from her shoulders as part of her delinquent aesthetic.
- Japanese Delinquents: Wears a Coat Cape, a long skirt and ear piercings, and has dyed a few strands of her hair.
- Naked First Impression: While Uzuki is the one that wasn't fully clothed, Maho determines from seeing Sora fondle her that he's a sick pervert and a lunatic.
- Pet the Dog: Defends a girl when she's being hit on by two other students and secretly raises a homeless puppy named Rinda.
- Sexy Soaked Shirt: Accidentally spills milk on her shirt after tripping in the dark. This does her no favors, as milk is Rinda's favorite food; the little pup promptly starts licking the milk off Maho's shirt, which makes her ask Sora to get it away from her when she starts getting turned on.
- Sugar-and-Ice Personality: Maho starts off cold and distant to Sora (unsurprising, given that she first met him while he and Uzuki were getting frisky), but warms up to him a little after their first accident, enough to ask him his name and give him her own.
- What Is This Feeling?: After Sora accidentall trips on top of Maho and starts rubbing on her crotch, she begins to wonder why it's getting so tingly down there (and everywhere else). While she's scared at first, her body decides that it feels too good and puts Sora in a leg lock so that he won't stop.
- Eyes Always Shut: Kamoi's default look.
- Those Two Guys: They are mostly there to be the guy friends our main character hangs out with when not with the harem.