Hayase Nagatoro

"Will you keep running away from your weakness? Well, it's fun looking at someone as awful as you, but don't you want to get better? Do you want to stay awful like this? Awful Senpai ♥ Hey, hey; What will you do?"

- Nagatoro

Hayase Nagatoro (長瀞 早瀬) is one of the two main characters of the Don't Toy With Me, Miss Nagatoro manga series. She is a first year high school student who likes to tease and bully her Senpai, the other main character, although she secretly harbors feelings for him. Nagatoro is an energetic, athletic, popular and rather sadistic - but deep down very sweet - girl, often referred to as a "sadodere". She is part of a 'cool kids' clique together with her friends Yoshi, Sakura and Gamo-chan, and is a member of the swimming club, despite also having a liking for martial arts.

Her friends affictionally calls her with the pet name "Hayacchi" (ハヤっち), although this sometimes seems to annoy her.

Appearance
Nagatoro is an attractive, petite and short stature, first year high schooler with long, straight back hair pinned to the right side with a pair of white hairclips. She has brown skin with noticeable - though sometimes inconsistent - tan lines in the shape of her swimsuit, and large, expressive amber-maroon eyes. She has a metallic piercing on her upper right ear and both of her lobes are pierced, despite she rarely wears earrings. Compared to other characters, she is exceptionally small, although it has been hinted that she may have a late growth sprut, and has a lean, athletic, slender and very flexible physique with a modest bust size which she is often ashamed about despite being, considering her size and built, pretty average sized. Nagatoro is rarely seen without a sadistic, cocky smirk that often displays her very prominent canines, also, she has the tendency to widen the pupil of just an eye whenever she grins.

She typically wears her school uniform consisting of a white button up shirt and a navy blue skirt completed with a pair of sneakers and no socks. However, in winter she is shown to wear tights and loafers. She is also often seen wearing the light blue and white swimsuit of her club.

When not at school she usually sports a simple, practical or tomboyish choose of clothing unlike most of her friends; however she has proven to know how to relatively dress up if needed.

Personality
Nagatoro come off as energic, cheerful, sarcastic, flirtatious, prone to fast-talking and moving individual with a sadistic streak. She likes to bully Senpai and finds joy in teasing him, however, although it appears that she just wants to torture him, it seems that there's more to it than that. In early chapters her antics could easily be described as "sadistic", frequently making Senpai cry, but soon she began to gain feelings for the boy and even apologized for "doing messed up stuff" to him, and asked him why he didn't stand up to her. Since then her bullying has mellowed out, and she even frequently acts outwardly friendly to Senpai, despite she keeps calling him "gross". As time passes, she is also occasionally defend Senpai's dignity and even shows to be very concern about Senpai getting angry at her as well as sincerely sorry while going too far. Nagatoro is very much a tsundere, despite denying her crush for Senpai and frequently mocking him, she is very possessive of him and doesn't tolerate her friends to bully him. Despite frequently belittering him, she does cares greatly for Senpai, being quite bothered when he says that "all he can do is draw" and getting motivated/angered enough by his lack of self confidence to begin personally training him. She also enjoys Senpai's company very much, but rarely outwardly shows it. Albeit when she invited him to the beach or to her house, she shows her intentions to enjoy it and wanting to do it again sometime. However she reacts with extreme flustered nervousness whenever he does the same, for example her face wearing an expression with extreme shock once senpai joked about failing a grade to spend more time with her, though she was angry when he did not fail, saying "Do you hate spending time with me that much..?".

She is very good friends with Yoshi, Sakura and especially Gamo-chan, whom could be considered her best friend, despite their similar and often competitive personalities sometimes put them at odds in a sort of friendly rivalry. Also, Gamo-chan loves to tease her in order to made Nagatoro admit her feelings for Senpai and bring them closer, causing prank that sometimes led the two to resorted to near-physical violence despite they seemingly always made peace rather quickly every time they fight. Also, judging by their friends' reactions whenever Nagatoro and Gamo-chan butt hears, it's not wise to make yhem mad, implying that they both has a temper warranting fear.

Although very popular among boys, with several of them often attempting to hit on her or her friends, she always rejects them and showing herself bored, contrarian and standoffish while talking to them, even to the point of saying to Yoshi that "boys are boring", despite her obvious growing crush on Senpai. Her occasional coyness seems to be for Senpai alone. It's implied that Nagatoro uses casual rudeness towards Senpai in order to deflect her real intentions, taking three steps in with her suggestions ("let's wear matching yukatas for next year's festival"), and two out with her teasing ("I'm joking, that would be gross"), inching herself gradually closer to him, thus defusing the situation for the moment while leaving a kernel of hope for Senpai.

It's also shown that Nagatoro is a sweeter and more empathetic person than she lets on, and that she's more susceptible to Senpai's kindness than he realizes, even tenderly hinting to him - when he gives her his mail contact, all while telling her that he's not a person worth talking to - that his declarations of self-deprecation affect her too. Also, she has a deep interest in the arts, whether is movies, paintings, dance, poetry or music. She seems to genuinely enjoy Senpai's art, frequently encouraging him to draw more and forcing him to use her as a model for his art. Though whether or not it's to train him to draw the female body, get him to draw her specifically, or is just an excuse to spend time and tease him more, is unknown. Nagatoro herself also occasionally draws.

Despite very frequently making sexual jokes to Senpai, mocking him for being a virgin and calling him a pervert, she is very nervous and sensitive about sexuality. For example: when Senpai was giving her a piggy back ride and his hand slipped to her upper thigh, she proceeded to jump off and ran away with minimal explanation and a nervous and terrified expression on her face, when Senpai meant to push her in the elbow and instead hit her breasts, she was very outwardly shocked and embarrassed for a couple of seconds, she had no problem in riding senpai like a horse for "muscle training" until when two unnamed girls saw it, making her very self-aware and causing her to immediately jump off, when she accidentally facetimed Senpai in the bath, she screamed in terror, when she and Senpai were trapped under a gazebo during the rain and he saw her drenched clothes and bra, she instantly blushed in frustration. Almost all those times, however, she recovered after a couple of seconds and begun to accuse Senpai of grossness and sexual perversion, though he eventually realized that Nagatoro would be at a loss if he actually respond to her taunts and, romantically, Nagatoro is all bark and no bite, especially due to the fact that she can get as embarrassed as he does. The hypocritical humor of Nagatoro constantly teasing Senpai about being a virgin is that she's obviously as inexperienced with physical intimacy with the opposite sex as he is.

Nagatoro has a complex for her bust size and appears to be very self-conscious as well as jealous and possessive. In the beach chapter, when Gamo-chan and Yoshi were harassing Senpai with their large boobs, Nagatoro get frustrated, took off her clothes as well, stood in a bikini in front of him and demand Senpai to go buy drinks. She also was mortified when learning of Gamo-chan's prank to have Senpai "molest" her boobs - due to her jealously since she is the less buxom among her friends - but nervously laughed it off as an hilarious prank once learned that she had stuffed anpan in her breasts and Senpai never actually touched 'em. It also appears her teasing is somewhat just a front, a coping mechanism to mask her insecurities and inner nervousness.

She is also very athletic, loves the beach, and is a fantastic swimmer as well as having a huge passion and proficence in various styles of martial arts; she shows her willingness to train Senpai after his poor performance at a marathon and easily outpaces him during their training run.

Apparently Nagatoro doesn't like shoes, as she almost never wears socks and is frequently barefoot when she can get away with it.

Webcomic
In the original webcomic, Hayase Nagatoro is often the only character seen by the reader due to the issues being mostly narrated by Hachioji senpai's point of view. In said iteration she is a malicious sadist whom evidently gains pleasure by hurting others, is violently abusive both physically and emotionally towards the male protagonist and rarely apologized to him or shows any signs of caring. At the beginning of the story she and Hachioji apparentely knew each other for a while and, the day after having cheered for her at a sport competition, he invited her at the park in order to try asking her out; anticipating his intention, the girl started to insult him stating that he was unworthy of her affection and calling him "gross", "embarrassing", a "maggot", "human garbage", a "pig" and a "cockroach", until he finally confessed his love to her and asked her out, which she accepted telling him that she was doing it only to make him her own toy to play with and that she would have made fun in breaking him. Since then, Nagatoro and Hachioji started to date, however she kept torturing him, though he reached breaking point when the girl made him believe her brother Ichirō was her real boyfriend and she was merely toying with him; although eventually he takes her back. Nagatoro went as far as to proposing Hachioji that if he allowed her to use his butt as a sandbag for practicing kicks she would have go to the ocean with him. Despite promising to kick him very lightly, during said practice she got visibly aroused over the pain she was inflicting to him and started to hit with powerful muay thai kicks. However, when the last bow sent him to the ground motionless she got worried, apologized and told him to be prepared as she would "train him like an animal" when they would go to the ocean. Gradually, over the years, Nagatoro seemingly sweeten up a bit over Hachioji and on the Christmas night of her (presumably) last year before graduation, they went on a date, sharing a dinner at a ramen kiosk since she deemed more "christmasy" stuff "too lover-like" for them. Walking home they take two can of hot coffee while sitting on the park and talked about their dreams for the future before exchanging Christmas gift: Hachioji gave her a muffer while the girl, showing she wasn't completely changed, gave him a choker, saying it has been hard for her finding one of the right size and that she hoped it suits him properly.

Sometime after (or maybe a little before) this, the couple sat on a on a park bench looking at a dead cicada that was eaten by ants while eating ice lolly. Saying the bus came out the safety of underground, eventually facing death in order to do "lewd things", Nagatoro started to tease Hachioji senpai with some sexual remarks, before to showing him that the stick of her ice lolly has a sign that marked she has won another one as a prize and wenting to take it alongside him.

Trivia

 * While first explaining how to write her name, Nagatoro said the first kanji means "long" (長) while the second, toro (瀞), is actually pretty uncommon and doesn't have a proper translation.
 * Although Nagatoro is noticeably darker than most other characters, it is implied to be just a tan from her swimming club activities, as evidenced by tan-lines in the shape of her swimsuit.
 * Also, in the Issue 4 of webcomic, set in winter, she's a lighter shade.
 * It's implied by the initial chapter's extras that Nagatoro may have ended up bullying Senpai unintentionally to begin with, as she wonders whether she came off too strong and brusque against him from being overexcited.
 * This also implied that she approached Senpai with the intention of being flirtatious but she went overboard, and that she has liked him since the beginning of the story.
 * She's sometimes drawn with noodly arms when she gets playful with Senpai, turning into what fans call "Noodletoro".
 * Not knowing their respective names in the first two chapters Senpai only referred to Nagatoro as "that girl" or "kōhai" (meaning "junior", the opposit of "senpai"). Later, she formally introduced to Senpai in Chapter 3 telling him her surname and saying she doesn't care about knowing his real name, as she was fine with calling him just "senpai". Since then, the protagonists began to refer to one another as "Nagatoro" and "Senpai" respectively.
 * However, since in Side Story 5 (chronologically placed before Chapter 35) she read Senpai's midterm test, which had his name written on it, it could be assumed Nagatoro knew his real name, as of that moment or maybe even prior to it.
 * On the other hand, Nagatoro's friends constantly called her "Hayacchi" in front of him, with the first time being Chapter 11, suggesting he found out her first name in that occasion.
 * She is a fan of horror movies, expecially with vampires.
 * After having dreamed of her in a cat-like form in Chapter 9, Senpai start to associate Nagatoro to a cat in his subconscious, even wenting so far as to assume out of nowhere that she actually has a pet cat, which in Chapter 18 is revealed not to be the case.
 * The cat-version of Nagatoro, originally dubbed Nekotoro, was then drawn by Senpai in Chapter 14 and on said basis a costume was made on Chapter 36 during the "Culture Festival Arc", being officially re-named Toro Cat in Chapter 44.
 * Nagatoro usually doesn't play video games and is quite poor at them.
 * Both Nagatoro and Gamo-chan shares the love for marlowe pudding, and apparently is often the many prize for the bets and competition their friendly rivalry is composed of.
 * Nagatoro likes and spicy food, a flavor that she loves on any kind of food, including ice-cream. Also, her favourite dishes at the sushi are negitoro maki and maguro nigiri, while her favourite snacks is koshian and the one she dislikes is tsubuan.
 * Despite she once stated she dislikes apparentely, after she helped her club to organize a yakisoba stand for the Cultural Festival as they did every year due to a 20 years tradition she started to liking it, joking about buying 100  and 100 yakisoba to bring them home and freeze them in order to ate them everyday.
 * Even in the videogame Escape from the Room with my Kōhai a cup of yakisoba is what the player gave to the character in order to cheer her up.
 * As surprisingly revealed in Chapter 35, Nagatoro is rather competent academically for a girl who procrastinates as much as she does.
 * Nagatoro is often mocked by her peers for "playing with food" or ruining it due to her weird tastes.
 * She's a very light weight drinker.