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 a small, short stature, first year highschooler 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 is exceptionally short compared to other characters, 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 her light blue swimsuit.

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 be capable to dress up when needed.

Personality
Nagatoro likes to bully Senpai and finds joy in teasing him. Although it appears that she just wants to torture him, it seems that there's more to it than that.

Her bullying in early chapters (and especially in the earlier webcomic, one chapter consisted of her physically abusing Senpai after forcing him to be her 'human punching bag',) could easily be described as 'sadistic', frequently making Senpai cry, but as early as chapter 3, she began to gain feelings for Senpai and even apologized for 'doing messed up stuff' to him, and asked him why he didn't stand up to her. Her bullying has mellowed out in later chapters, and she even frequently acts outwardly friendly to Senpai, but not before calling him gross again.

She appears to be very popular, being very good friends Gamo-chan, Yoshi and Sakura. Boys frequently attempt to hit on all three of them, which she always declines. When asked why by Gamo-chan, she replies by saying 'boys are boring' (despite her obvious growing crush on Senpai.)

She is also very athletic, showing her willingness to train Senpai after his poor performance at a track meet. She easily outpaces Senpai while training him (but knowing Senpai, that is not difficult). She also loves the beach, and is a fantastic swimmer.

She is very much a tsundere, despite denying her crush for Senpai and frequently bullying him, she is very possessive of him and does not tolerate Gamo-chan or Yoshi to bully him, and several times throughout the series has resorted to near-physical violence to protect Senpai from Gamo-chan and Yoshi's bullying. (One time when Yoshi and Gamo-chan wanted to 'practice boxing' with Senpai, she quite literally fought them off, even yelling/warning Senpai to run away.) She cares greatly for Senpai, being greatly bothered when he says 'all he can do is draw' and is motivated/angered enough by his lack of self confidence to begin personally training him.

Despite very frequently making sexual jokes to Senpai 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 with minimal explanation and ran away, with a nervous and terrified expression on her face. When Senpai meant to push her in the elbow and instead hit her in the breast, she was very outwardly shocked and nervous for a couple of seconds. While she had no problem 'riding' senpai like a horse for 'muscle training' when two unnamed girls saw it, she became very nervous and self-aware, and immediately jumped off. When she accidentally facetimed Senpai in the bath, she screamed in terror. When she and Senpai were trapped under the gazebo in the rain, and Senpai saw her drenched clothes and bra, she instantly became very flustered and nervous. But, as always, she recovered after a couple of seconds and begun to accuse Senpai of grossness and sexual perversion again.

She very much enjoys Senpai's company, but rarely outwardly shows it. She sometimes tells him, for example when she invited Senpai to the beach or to her house, showing her intentions that she enjoyed his company and wants to hang out with him again sometime. Though she reacts with extreme flustered nervousness whenever he does the same, 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 also appears to be very critical, with an interest in the arts, especially vampire movies. When one of the unnamed boys attempts to flirt with her by showing her his music, she reacts with complete uninterest and even says she felt 'nothing at all', not even inspired or impressed enough to bully him, like she bullies Senpai. However, 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.

She appears to be very self-conscious and jealous, as well as possessive. In the beach chapter, when Gamo-chan and Yoshi were harassing Senpai with their large breasts, Nagatoro responded by taking off her clothes to reveal a swimsuit and demanded that Senpai buy her drinks, a flustered expression on her face. She also was mortified when learning of Gamo-chan's prank to have Senpai 'molest' her boobs, (probably because of her jealously since she is rather flat herself) but nervously laughed it off as a hilarious prank once learned that she had stuffed Anpan in her breasts and Senpai never actually touched her breasts. It appears her teasing is just a front, a coping mechanism to mask her insecurities and inner nervousness.

Trivia

 * 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.
 * 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.
 * 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.