Hitagi Senjougahara (戦場ヶ原 ひたぎ, Senjōgahara Hitagi) is a third-year student of Naoetsu Private High School. She is considered to be a frail-looking girl with an "incurable disease" and is distant towards others. In an accidental encounter with Koyomi Araragi, her closely kept secret was exposed, and this triggers a life-changing experience. In the course of the series she receives the nickname Gahara and uses the alias Senshougahara. She is the titular protagonist of three arcs: Hitagi Crab, Hitagi End, and Hitagi Rendezvous.
Hitagi is a girl with long purple (sometimes portrayed as dark brown) hair and blue eyes. She has a glamorous figure, although she is also considered as a "frail" girl due to her lack of participation in school activities. She wears the Naoetsu Private High School uniform the usual way while wearing black thigh-highs and can be seen wearing dresses or similar clothing that cover up to her knees.
In later events, she has the sleeves of her uniform rolled up and pinned in place, turning her uniform into a sleeveless blouse and has short hair.
Hitagi possesses a sharp tongue and can be blunt while still maintaining a straight face when speaking to others. This trait of hers makes interacting with her a challenging task, if not impossible, something that Araragi discovers first-hand. In spite of this, she is sincere in everything that she says.
She calls herself a tsundere and probably has some idea about otaku culture, as she once mentioned how "moe" Meme's name was to Araragi.
For the three years of high school, Hitagi is in the same class as Koyomi, although she has rarely spoken with anyone for that time. Likewise, Tsubasa Hanekawa knows little of Hitagi's current state, only judging her from what she knew back in middle school.
According to Tsubasa, Hitagi was an overachiever in middle school, friendly towards others and excelling in both academics and sports as a varsity track and field athlete. She was also wealthy, as her father is famous in a certain foreign corporation and she lives in a mansion; despite this, she retains a sense of humility. Her seemingly perfect personality grants her the admiration of her classmates and teachers.
When she was in the first year of high school, she encountered a mysterious crab, after which she became weightless. Ever since, she has avoided contact with everyone else, and she threatens everyone who discovers her secret, including her friend Suruga Kanbaru.
Hitagi reveals that she was a girl who had a close brush with death when a disease threatened her life, barely surviving the ordeal through an extensive surgery. What happened to her caused her mother to seek refuge to a cult, which eventually initiated the deterioration of the Senjougahara household. Hitagi's mother sold the family's riches to the cult and her involvement with the cult almost caused Hitagi to be sexually assaulted by one of the cult's high-ranking members. Fortunately, she managed to hit him with spiked shoes and injured him. Eventually, Hitagi's mother left the family, leaving behind a large debt which Hitagi's father is currently trying to pay back.
In an accident involving a misplaced banana peel, Hitagi falls down the flight of stairs that lead to the upper floors of Naoetsu Private High School and ends up in the arms of Koyomi Araragi, her classmate. Later that day, she confronts Koyomi about how he found out her secret and threatens to hurt him unless he promises to keep quiet about his discovery. Koyomi, in spite of this, declares his intention to help, showing the completely healed wound where Hitagi implanted a staple into his cheek moments earlier. Shocked by Koyomi's immediate recovery, Hitagi decides to accompany him on his trip to the person who might be able to turn her back to normal: an eccentric man named Meme Oshino.
She learns from Meme that she was inflicted by an oddity called a "heavy stone crab" (or "god"), who took away her weight in a past encounter with it. Although reluctant to cooperate with Meme, who reminded her of the scammers who once visited her with the same promises of turning back to normal, she agrees to follow Meme's methods, even willing to pay 100,000 yen for his services.
As advised by Meme, Hitagi changes into a set of clean clothes as part of the ceremony planned by Meme, before returning with Koyomi to Meme's place. Hitagi is then put into a situation where she would recall the memories of her life. Afterwards, the heavy stone crab manifests in front of her, visible only to Hitagi herself. Although the unpredictable behavior of the entity forced Meme to intervene, Hitagi manages to plead to the heavy stone crab to lift its influence from her. The heavy stone crab grants her wish and departs, leaving behind Hitagi with the burdens of her childhood on her shoulders. She begins to cry while Meme explains her resolution.
After the ordeal with the heavy stone crab, Hitagi shows her gratitude to Araragi and he becomes her first friend after a long time.
Hitagi meets Araragi by chance in Namishiro Park dressed with a set of clothes she just bought. She and Araragi talk about several things, including how she would repay him for his help in turning her back to normal, and she considers unusual methods to return the favor, much to Araragi's shock.
Soon, Araragi's attention would be shifted towards a young girl who seems lost. Following Koyomi's advice, they help the girl, named Mayoi Hachikuji, on her way back home, but they soon find themselves unable to reach the address. They later decide to consult Meme about Mayoi, and they discover that she is a lost cow (a play on the word "snail" (蝸牛, katatsumuri) which has the character for "cow" (牛, ushi)).
On her return trip to the park where Araragi is, she finally confesses that she had been pretending to have been sensing Mayoi's presence and that Araragi is the only one inflicted by the oddity (i.e. Mayoi herself). According to Hitagi, Mayoi was already dead years ago, and people who are victims of the lost cow often have problems at home, and this causes Araragi (and Tsubasa, who also has problems of her own at home) to be able to see and interact with Mayoi. Nonetheless, Hitagi decides to help out with Mayoi's problem, showing an alternate route that is supposed to confuse the oddity by introducing roads that Mayoi has not seen before.
Hitagi, Araragi and Mayoi soon reach the remnants of the former Hachikuji residence, now simply an empty lot, and the two witness Mayoi's fulfillment of her final objective before moving on. After the accomplishment of their mission with Mayoi, she admits that she loves Koyomi, and she subsequently enters into a relationship with him.
To prepare for the school's midterm examinations, Hitagi prepares a group study session with Koyomi. In one of those sessions, she prepares the money she owed Meme after curing her of her unusual condition. However, Araragi forgets to take the money with him, so Hitagi goes to catch up with him. She would later see Araragi in a poor state, badly wounded by an attack that he tried to explain as "a bike accident gone horribly wrong" and helps him recover in her own unusual way.
Hitagi would soon hear about Araragi facing her middle school friend Suruga Kanbaru from Meme himself and, seemingly as Meme planned, intervenes the Rainy Devil's relentless attacks against Araragi. After scolding Araragi for dealing with things without her knowing about it, she confronts Suruga, telling her that she will not forgive anyone who would kill Araragi before reconciling with her friend. After the Rainy Devil left Suruga behind, the two become friends once again.
Senjougahara decides to give Kanbaru some time together with Araragi so that the two can be friends after the events involving the Rainy Devil. She even allows Kanbaru to choose a necessary punishment for him if ever Araragi gives her trouble, much to Koyomi's worry. Tsubasa later considers this move by Hitagi as rather alarming, as it would force Koyomi into a situation wherein he would end up helping others at the expense of hurting another's feelings.
Hitagi captures Koyomi under the excuse of "protecting him" and detains him inside an unknown location. During this time, Hitagi would provide food and drink to Koyomi while he is chained up to the wall, but later allows Koyomi to get away from his restraints after she relays a message concerning his sister.
She later reveals that she has been "working for" Tsubasa in confronting Deishuu Kaiki, the first of five conmen who had swindled away much of the Senjougahara family's earnings, after his arrival in town and his influence on the middle school where Koyomi's younger sisters are studying in. Initially, she planned to take Kaiki down herself and refuses any help, even from Koyomi. However, after a short talk with Koyomi, who shares Hitagi's feelings against Kaiki due to Karen's oddity-related sickness, she allows Koyomi to join her.
The day after, she and Koyomi meet up with Kaiki on a nearby amusement park, the first confrontation between the conman and Hitagi after a long time. During their conversation, Hitagi was unable to defend herself against Kaiki's deceitful words, but was able to negotiate Kaiki's departure from the town, finally curbing the spread of supernatural charms between junior high school students in the area.
Hitagi left town with her father during Tsukihi Phoenix, spending much of the summer vacation in a beach elsewhere. It is shown by the end of the story that Hitagi had cut her hair short.
A fire breaks out from the Hanekawa Residence, causing Tsubasa to lose her home and belongings. Hitagi warmly accepts her into her apartment unit in Tamikura-sou, where Tsubasa spent a few days until Hitagi's father went home, forcing Hitagi to bring her to the Araragi Residence. During Tsubasa's stay in her house, Hitagi manages to talk to Black Hanekawa, and this motivates Tsubasa's alternate persona to protect Hitagi and her home from an attack by the oddity later named Kako.
Nadeko transforms into a snake god because of a set of circumstances which stemmed from Nadeko seeing Koyomi with with a girl that she considers to be his girlfriend. Hitagi contacts Koyomi by phone, who is attacked by Nadeko, and she opens a deal with the snake god, asking her to wait until after graduation ends, after which Nadeko can freely kill her, followed by Koyomi and his companion Shinobu Oshino. Nadeko accepts the deal, and becomes the god of Kita-Shirahebi Shrine for the meantime.
During Hitagi's phone conversation with Nadeko, Hitagi states that she hates cute brats like Nadeko.
At the start of the new year, Hitagi contacts Deishuu Kaiki to request him for an important job. This request takes the two to Okinawa, where Hitagi asks Deishuu to deceive Nadeko Sengoku in order to save her and Koyomi's life. Initially, Deishuu saw himself uninterested in helping Hitagi and meddling with the affairs of a snake god. However, he eventually agrees to the job by using Suruga Kanbaru's well-being as a source of motivation.
Hitagi and Deishuu maintains a line of communication during the latter's sole investigation of Nadeko's circumstances, and she occasionally meets with Deishuu to ask about the progress of his work, as well as share information about Nadeko. (Eventually, Deishuu receives better information about Nadeko from Tsubasa Hanekawa, who is eluding both Hitagi and Izuko Gaen.) Deishuu eventually finishes the job and extracts the snake god talisman from Nadeko's body, after which Hitagi thanks the conman for the last time.
On Valentine's Day, after dealing with a troubling episode of manifesting the characteristics of a vampire, Koyomi visits Hitagi at her house in Tamikura-sou. No longer the distant girl from before, she is cheerful enough to call Koyomi "Koyokoyo" and she prepares handmade chocolate for him. Koyomi eventually talks with Hitagi about his most recent experiences and she romantically shoves it aside, urging Koyomi to postpone his current plans in favor of spending more time with her.
Two years before the present time, a first-year Hitagi was part of the class that was put under scrutiny after the results of the final exams for mathematics revealed a big margin between the scores of those who joined a study group and those who didn't. Hitagi achieved a score of 98, the third highest in the class, but mostly eluded the commotion in the class assembly held by then class president Sodachi Oikura because of her aloof personality.
- Hitagi's first name is said to be a related to the term "public works". In fact, the only way to write Hitagi's name using kanji is through "肥田木", which are the kanji for "fertilizer", "field" and "tree" respectively. Meanwhile, the term "public works" is written in kanji as "土木", which are the kanji for "soil" and "tree" respectively. But since Hitagi's name is written using hiragana, this is quite irrelevant.
- Her surname means "battlefield" in general, but can also mean a certain mythical battlefield between the gods of Mt. Nantai and those of Mt. Akagi (Source: here).
- Senjougahara weighs 45 kg based on her body measurements, but was only 5 kg when she was under the influence of the heavy crab.
- Senjougahara's birthday is July 7th, making her astrological sign a Cancer.
Characters of the Monogatari Series
|Araragi Family||Koyomi Araragi • Karen Araragi • Tsukihi Araragi • Araragi Matriarch|
|Heroines||Hitagi Senjougahara • Mayoi Hachikuji • Suruga Kanbaru • Nadeko Sengoku • Tsubasa Hanekawa/Black Hanekawa • Shinobu Oshino • Sodachi Oikura • Ougi Oshino|
|Exorcists||Meme Oshino • Deishuu Kaiki • Yozuru Kagenui • Yotsugi Ononoki • Izuko Gaen • Tadatsuru Teori • Seishirou Shishirui|
|Vampire Hunters||Dramaturgie • Episode • Guillotine Cutter|
|Other Characters||Hitagi's Father • Hitagi's Mother • Tsunade • Mayoi's Father • Tooe Kanbaru • Suruga's Father • Suruga's Grandmother • Nadeko's Parents • Tsubasa's Parents • Mizudori • Rousokuzawa • Higasa • Rouka Numachi • Sasayabu • Komichi Tetsujou|