𝙉𝙖𝙩𝙨𝙪𝙠𝙞

Natsuki is a tsundere, an ISFP.

Appearance Natsuki is a notably short-statured, 18-year-old[ adolescent young woman, frequently referred throughout gameplay by other characters as having an outwardly "cute" appearance; having perpetually flushed cheeks and a fair-toned skin color. Her canine teeth are longer than the rest of her teeth, making them visible when she opens her mouth wide enough. She is the shortest member of the Literature Club, a particular feature that results in people commonly mistaking her for a first year student. In Act 2, Monika suggests that Natsuki's height is due to a case of malnutrition—because of the apparent abuse from her father, Natsuki's growth has become significantly stunted as a result. Following this, Natsuki is portrayed to have a bit of an underdeveloped physique for her age; having a thin, broad-shouldered build and a flat chest (b cup).

Natsuki has fringed, bobbed Pastel-Pink hair lengthening to her chin. Her bangs are predominantly swept to the right, having two prominent strands of hair framing either side of her cheeks. Her hair accessories consist of a red anime~esque X hairclip, paired along by two red ribbons holding up two small matching pigtails on either side of her head, with the rest of her hair left down. Her eyes are glittery and colored the same as her hair, and her face is often worn in a sour or pout-y expression.

While in school, Natsuki wears the standard-issue female school uniform: consisting of a warm gray blazer fully buttoned and untucked, a trimmed mocha-brown sweater vest, a collared white shirt slightly unbuttoned at the collar with a thin red ribbon attached at the collar, a dark blue pleated skirt, thin white calf-high socks and white uwabaki slippers with sky-blue fronts.

If the player decides to help out with Natsuki over the weekend in Act 1 to bake cupcakes for the upcoming Festival, Natsuki wears a puff-sleeved white shirt with a small light pink cat face emblem on the left side, paired with light pink trims lining the edges of the sleeves. Tucked under by a tri-tiered frilled light pink tutu with a thin black trim at the top hemline. Under the shirt, two black bra straps are visible on her shoulders. Footwear is not shown.

Personality Natsuki appears to be a brash, blunt, cranky and bratty girl at first, but she has a cute, softer interior, causing Monika to class her as the real-life embodiment of a tsundere. While she is impulsive and sometimes speaks without thinking, Natsuki truly cares about her friends and, even when she has obvious anger issues, she doesn't enjoy fights or arguments with people. Over the course of the game, it is shown that she worries about Yuri, and, on one occasion, she gives the protagonist a note asking him to help Yuri, fearing that if she spoke out then it would cause more arguments. Natsuki is very stubborn and has a hard time expressing how she feels and what she wants. When repeatedly challenged, she often becomes awkward and tongue-tied, then aggressive, and then simply bursts into tears.

Natsuki is also shown to be less pushy and more relaxed when she is outside of school, as mentioned by the protagonist when she visits his home. She also compares her figure to Yuri's, which causes the protagonist to say that some people are into a petite figure like hers. She is also known to be skilled in baking, as she made cupcakes for when the main character first arrived in the Literature Club, and for the festival.

Natsuki's cute interior also involves a love of manga and anime, particularly those in the slice-of-life genre, and baking. She has been known to store her manga collection in the Literature Club out of embarrassment; another reason (hinted at) is because her father would be angry while the rest of the club obviously knows about her interest, and she is still hesitant to talk about it. Natsuki also likes cute things, such as cupcakes with cat faces, and prefers poems with cuter, happier words, though her own poems are still about sad things, such as being persecuted for one's hobbies.

Natsuki believes that it's important to be able to express something deep with few words. Her simplistic writing style puts her at odds with Yuri, who has a more extravagant style. In Act 1, the protagonist is tasked with siding with Natsuki, Yuri, or asking for Sayori's help after an argument between Yuri and Natsuki regarding writing styles. Choosing Yuri will cause her to be offended, and the player attempts to read Natsuki their poem, Natsuki will immediately shoo them away.

Natsuki hates being called "cute," even when she acts as such or does cute things, and she will deny any claims from others relating to this; nevertheless, she is much more comfortable exposing her sweet side once she knows people aren't going to tease her about it. Natsuki hates it if she isn't taken seriously, whether it's her writing, her hobbies, or just her overall demeanor. It is likely she learned to be ashamed of herself and her hobbies because her classmates judge her and because of her implied abusive father, making her abrasive nature a coping mechanism. This is also implied in a secret poem, "Things I Like About Papa," which is most likely written by her.

It is shown that she is a very lonely person who desperately craves affection from anyone. One example is during the third poetry-sharing session: if Natsuki has liked all the player's poems to date, she outright asks the protagonist if he thinks her poems are the best, which quickly shifts to her begging him to say they are, even if he hates them.

During Act 2, Natsuki, for the most part, predominantly resembles her original Act 1 character. However, due to Monika tampering with Natsuki and Yuri’s files to make them more unlikable to the player, like Yuri, Natsuki’s underlying problems that were subtly implied during Act 1 are disturbingly revealed; in particular, Act 2 focuses more on her father and Monika’s influence onto that aspect.

If the player writes a poem for Natsuki, the protagonist will read manga with Natsuki, and during the middle of the session, she will fall asleep. The protagonist will try to rouse her, and she will glitch out, with a mass of black glitches covering her eyes and mouth, and her dialogue will be distorted. Monika will find them and ask if she's okay, to when Natsuki doesn't respond, Monika will throw her an energy bar for her to eat. Monika then tells the player that Natsuki is malnourished, which could possibly be due to her father, as implied in "Things I Like About Papa". This can also be the reason for her lack of height and her small body, and more personality-wise the reason for her refusing to open up sometimes.

Act 2 also displays a more possessive Natsuki, as shown in the scene when she argues with Monika over getting new members. She doesn't have a lot of places that are safe for her, so when she does have one, she prefers for it to remain intact. Additionally, it is hinted that the personality of Natsuki's father has been exacerbated, which could also be a factor of her possessiveness and amplified wrath.

She dresses in cute fashion out of school.

Monika: Kind of observant president of the literature club, creator of the club, wears a long ponytail tied with a white bow, has brown orangish hair, has bangs and long hair, green hair. Wears the same uniform as Natsuki with pink tip white shoes and black pantyhose. Sayori: vice-president of the club, wears same uniform as natsuki, normal socks, white shoes with baby blue tip, depressed, has a side ponytail on her bob pixie cut coral hair, with a red bow, blue eyes. Yuri: Shy, deals with self-harm, long purple hair, has a purple tip on her bangs, her skirt is just a bit longer than the others, wears normal socks and the same shoes as sayori, purple eyes, never looks in the eyes at anyone.