Misaki Nagatoro

"You came all the way out here. So I was going to tell you anything you wanted to know, every little detail about her... aren't you interested...?"

- Nagatoro's sister to Senpai

A girl whose surname is Nagatoro (長瀞), is a minor character of the Don't Toy With Me, Miss Nagatoro manga series. She is Hayase Nagatoro's older sister and likes to tease the latter despite caring and loving her deeply. After realizing about the true feelings between her little sister and Senpai she decide to help their budding relationship.

Her first name is currently unknown and Senpai only refers to her as "Big Sis-Toro" (姉瀞).

Appearance
She is a beautiful, shapely and yet short statured young woman with medium length, straight black hair that falls on her forehead in a thick fringe. She has a relatively light skin, and large, expressive and yet somewhat tired-looking dark amber-maroon eyes, with an attractive mole under the left one. Her ears are not pierced and she does not seem to wear earrings or any kind of jewelry. The girl is very similar to her younger sister in term of physical shape, sharing her lean, athletic, slender and flexible physique albeit with a larger bust size due to being a young adult rather than a teen. The girl sports almost always a wide, kind and sweet smile displaying incisors slightly pronounced than average. Also, she has her sister's same tendency to widen the pupil of just an eye whenever she grins.

She typically wears sport clothes, sweatshirts, tight pants and sneakers.

Personality
Nagatoro's sister is a calm, cheerful, easy going and level headed girl with a bit of liking for teasing, just like her little sister Hayase, although at a very lower level. She loves to joke and is very friendly, when first introducing herself to Senpai she makes him believe she would have called the police and have him arrested for trespassing into her home, only to reveal she was merely kidding and then inviting him inside. A very mature and responsible girl, she behaves like an excellent hostess to Senpai and take good care of her sister, to whom she's very protective and caring to. She's described as the type who enjoy spoiling her little sister. Moreover she has proven to know her little sister so well to easily "manipulating" her, making her "dance in the palm of her hands" - much to Senpai's astonishment - even to the point to talking her around or scolding her about her manners when she didn't behave, showing to be very polite and well-mannered. She is very excitable, inquisitive and honest, despite this blunt attitude of hers sometimes create awkward situations being a source of embarrassment for Hayase, albeit mostly unintentional. According to her little sister she tend to "run her mouth off".

It's also shown that Nagatoro's sister could emanate her same intimidating aura of her younger sister, and, whenever this happens, she is depicted with hellishly shadows all over her face and disturbingly huge eyes pupils, making her look like a ghostly entity.

As the "cool big sis" and reference figure to Nagatoro, she's a sort of confident to her; Nagatoro told her about Senpai more than once, indirectly making her aware of how she felt about him as well as their "erotic" interaction. Although she somewhat likes to tease her little sister and sometimes embarassed her, treating her like if she was still a child, she does love her deeply, is rather protective of her regard and willing to help the relationship between her and Senpai, often offering the latter to tell him more about Nagatoro if he wanted to. It is also strongly implied that Hayase actually looks up to her, trying to emulate her attitude and having learn how to "tease" boys from her.

In stark contrast with the maturity she usually display, the girl seem to have a habit of eavesdropping and very little sense of personal space. She can also be quite careless, since she forgot to close the house front gate before going shopping.

Early life
The girl was born in, , the older daughter of the Nagatoro family. She has a close relationship with both her brother Ichirō and younger sister Hayase, while her parents are middle class that often work late. She grew up in a house in the suburbs right in front of a park, under a 7-eleven; as a kid she went every year to the summer festival with her family, enjoying the fireworks contest at the beach.

After graduating from high school, she enrolled at a university somewhere in the town or very close to it, keep living with her family and proving to be such a good and hard-working student to have an huge amount of free time between her classes.

After Hayase began attending high school she started to talk a lot to her about "her Senpai" and their interactions, leading the young woman to realize about her sister's crush on him.

First name arc
One day, after her little sister get a flu, she stayed at home with her and took care of her. In the afternoon, she went to the kombini to take a pudding for Hayase while she was taking a nap, accidentally leaving the front gate open, and when she came back home, the young woman noticed a boy in the front yard; recognizing him as Senpai she pull a prank to him pretending she mistook him for a thief, before introducing herself as Nagatoro's sister and inviting him inside. After checking on her sister and discovering she was still sleeping, the young woman offered Senpai some snacks and revealed to him that her little sister talked a lot about him. She also asked if there's anything he wanted to know about her, stating that she would reveal him whatever he want regarding her sister. Before Senpai could make his question, Nagatoro entered the kitchen yawning, with messy hair and a comfy pj, blushing in embarrassment after discovering that he was there.

Embarassed, the girl immediately went to dress and do her hairs, scolding Senpai for not having called nor warned her before coming to her house, to which he replied that he sent her a text, although she yelled back at him that she was sleeping. After telling her little sister not to be so angry, the young woman acted as a pacifier preparing her little sister a special marlowe pudding with fruit and cream to calm her down, saying that they should all sit and chat a little. However feeling ashamed, Nagatoro asked Senpai to came to her room and forbid her sister from entering. Regardless of this, she later entered the room to bring them something to drink and caught her little sister feeding Senpai with a spoon commenting the boy does indeed seem interested in "every little detail" of her little sister. Blushing vividly, Nagatoro sent her sister out of her room, then she asked Senpai what does she meant by her last sentence.

Few minutes later, having eavesdropped on her sister and Sanpai's conversation regarding the boy wanting to know Nagatoro's first name but lacking the courage to asking it directly, she stormed once again into the room calling her little sister "Hayase" and bringing the photo album of her primary school years in order to show it to Senpai. Regardless of Nagatoro yelling her to getting out of her room, the young woman continued to show embarassing picture of "little Hayase" - that she deemed "cute" - to Senpai.

Manga

 * Chapter 59
 * Chapter 60
 * Chapter 61
 * Chapter 62
 * Chapter 63

Trivia

 * Her little sister Hayase always refers to her as "Onee-chan" (お姉ちゃん) a Japanese term that means "big sister" in a cutesy and affictionate way and could also be used to address slightly older women, regardless of blood relations.
 * It is unclear which one between her and Ichirō Nagatoro is their family eldest child.
 * She shares the "Noodletoro" pose with her sister, as she's sometimes drawn with noodly arms just like Nagatoro when she gets playful with her or Senpai.
 * The girl has very sweet tooth and a fondness for puddings.
 * Due to Chapter 59 being named after one of her lines, she is the third character after Nagatoro and Gamo-chan to ever name a chapter.
 * She is the first character to have ever called the protagonist by her first name, thus revealing it to the readers and Senpai himself.
 * Aesthetically she bears a strong resemblance to Bakemonogatari ' s character Ougi Oshino.