ข้อมูลอนิเมะBakemonogatari

Koyomi Araragi catches Hitagi Senjōgahara as she falls down from a great height, Koyomi immediately notices that Hitagi weighs little to nothing, however he does not mention this to her. Later he asks Tsubasa Hanekawa, the class chairman, about her; he finds that she was sick and contemplates if that is actually the case. As she is leaving Hitagi confronts her, as she threatens him she explains that a crab took her weight. When he agrees to keep quite about her secret, she staples the inside of his mouth and proceeds to leave. Koyomi follows her and tells her that he may be able to help, to stop Hitagi attacking him he shows her that the wound in his mouth, inflicted a few minutes previous, had already healed. They go to see Meme Osino, who after hearing her situation explains that it was the weight crab, a god, that took her weight.

At Hitagi Senjōgahara's home Hitagi contemplates her past as she showers, Koyomi Araragi waits for her. Earlier Hitagi was told to wash and change her clothes by Meme Osino, who arranges for all of them to meet at midnight. Back at Hitagi's home, Koyomi argues with Hitagi while she gets dressed in front of him. Later that evening they meet Osino, he explains that there are not going to attack the crab god but instead pray to it. They go before an alter, Osino instructs her to relax, he then asks her a series of questions. His final question results in Hitagi retelling about how her mother joined a cult when Hitagi was sick, and that one night her mother brought a higher up, from the cult, home. Hitagi injured him as he attempted to sexually assault her, her mother watching without aiding her. As a result her family was broken apart; Hitagi feels that she is responsible. She opens her eyes to find a crab facing her. Koyomi and Osino are unable to see the glowing yellow eyed, red word-bound form of the giant crab. When Hitagi is the attacked by crab god, Osino is forced to intervene - this allows her to beg the crab for her feeling and memories - and they are returned. In a flashback it is explained how her mother joined the cult, and how the attack on Hitagi resulted in a broken family; that she met a crab which took her feelings(weight) and memories of her mother. Hitagi now has her memories and feeling of her mother back, but she has forever lost her mother. In the morning Koyomi finds that his weight has also been increased by the crab god.

Koyomi Araragi sits in the centre of a vast playground, reminiscing about his mother, and his mountain bike. He sees a young, lost girl, Mayoi Hachikuji, who he does not know, who later leaves leaves. Hitagi Senjōgahara arrives and, after a brief conversation about the clothes that she wears, she admits to Koyomi that they are friends. They proceed to have a strained conversation while they use the playground equipment. Later Koyomi spots the lost girl looking at the map again, leaving Hitagi behind he goes over to her to see if he can help her. After she refuses his help, and later ignores him, Koyomi surprises her by hitting her head into the sign, during a hostile exchange Mayori introduces herself. They get into a brawl, ending in Koyomi as the winner. Koyomi proceeds to get aid from Hitagi about helping Mayori find her way. After a question from him Mayori admits that she is not a lost child, but is in fact a lost snail.

After talking with Hachikuji, Koyomi discovers that the young girl is trying to get to her mother's house. However, as he, Hachikuji, and Hitagi try to make their way to the address, they keep getting inexplicably lost. Koyomi then decides to send Hitagi off to find Oshino while he stays behind with Hachikuji. Hachikuji mentions that she has always been trying to get to her mother's house, but can never seem to get there. She and Koyomi get into a an argument and briefly fight. Hanekawa then arrives, saying that she was passing by. She asks Koyomi about his relationshp with Hitagi, but he isn't able to give her a definite answer. After Hanekawa leaves, Koyomi recives a call from Oshino, who says that he has given Hitagi instructions on how to solve Hachikuji's problem.

While waiting for Hitagi to arrive, Koyomi begins to find out more about Hachikuji's life. She is the only child of a couple that had undergone a bitter divorce. Hachikuji was put under the custody of her father, and had any contact with her mother deliberately cut off to the point where Hachikuji could barely recognize the face of her mother. Hitagi then arrives and apologizes to Koyomi. She reveals that Hachikuji does not exist, as she is actually dead. As a ghost, she can only be seen by those who have a subconscious desire not to return home. As a result, Hitagi could not see Hachikuji and didn't say anything because she feared that she might be "different" again. The information Oshino provides helps them find Hachikuji's mother's house, but it is a vacant lot. However, Hachikuji is happy and disappears, saying she's finally home. Afterwards, Hitagi admits that she is in love with Koyomi, and she is deeply intrigued by his desire to help anyone in need. At the end of the episode, Koyomi runs into Hachikuji again, who states that she has been "promoted" from a haunting ghost to a wandering ghost and that she'd like to visit Koyomi from time to time.

Koyomi needs to study for upcoming exams and is on his way to Hitagi's house for help when Hachikuji appears and teases him about his one-on-one "study" session. Also on the way, Konbaru Suruga runs to meet him. She voices admiration for Koyomi and asks him random questions about foreign affairs to which he has no answer. Koyomi tries to get her to leave by asking if the basketball star has any clubs she needs to go to, but that doesn't work because her hand is wrapped in bandages. Only when Hitagi is mentioned does she finally leave, but it also leaves Koyomi confused and with Hackikuji teasing him about all the girls now in his life. At the study session with Hitagi, the two discuss their future after high school, but things quickly deteriorate when Koyomi mentions Kanbaru. It turns out that the two were friends in middle school and Kanbaru may have even had a crush on Hitagi, but they had a falling-out in high school. After studying, Koyomi calls Hanekawa for more details about Hitagi and Kanbaru, but she warns to mind his relationship with Hitagi and not to dig too deeply into her past too quickly. On his way to Oshino to drop Hitagi's payment off, Koyomi is viciously attacked by a mysterious person with bandages on their hand and left bleeding from his head and mouth on railroad tracks. As it turns out though, Koyomi had forgot the payment and Hitagi runs into him lying on the ground as she tried to catch up to him.

Hitagi says she believes that Koyomi was hit by a car. He says he stumbled, which she seems to accept. Koyomi goes to Suruga's house, and finds that her room is filled with red books. She apologizes for beating him up the previous night. Koyomi asks about her unnatural strength, and she reveals that she literally has a monkey's paw. She also bluntly states that she is a lesbian, which is hard for Koyomi to swallow.

Inheriting a mummified hand from her mother, Suruga first wished on it in 4th grade to run quickly so that she could win a local race. Soon after, four of the competitors were hospitalized due to an assault from a monster dressed in a raincoat. Suruga suspected the hand may be acting like a monkey's paw, wherein a wish is granted in an unexpected way. She abstained from wishing upon the arm for many years, coming close once to wish for help with Hitagi's crab problem, but it's stated that such a wish would probably not have been granted, as the arm only manifested negative wishes, especially the hidden intentions of them (the students being beat up was revenge for Suruga being outcast). However, after seeing Koyomi and Hitagi in a relationship, she became insanely jealous, and wished upon the arm to be with Hitagi, without noticing that the hand had grown into an arm and attached itself to her. Oshino surmises that her first granted wish had already caused the devil to take a portion of her soul, leading to the hand's growth. He offers the solution of cutting off the arm, a suitable price in exchange for nearly killing Koyomi (a result of the hidden side of her second wish). Koyomi objects to this, and instead, opts to defeat the devil to dissolve its contract. To prepare for the fight, he gives some of his blood to Shinobu in order to boost his limited vampiric powers. Despite that, he still gets literally shredded apart by the devil, and is saved at the last moment by Oshino's intervention. He called for Hitagi, who notes that Koyomi had hidden the entire situation from her, against his precondition for their relationship. With her appearance, the devil is unable to continue the attack without invalidating either half of the wish, so the contract is dissolved. However, even though the devil is gone, her arm still hasn't fully recovered. In the end, she becomes good friends with both Koyomi and Hitagi.

Koyomi and Suruga travel to an abandoned shrine in order to perform a favor for Oshino. As they climb the mountain the shrine is located on, they pass a girl running down the path, who only briefly exchanges glances before continuing in the other direction. Once they reach the shrine, Koyomi and Suruga discover a number of dismembered snake corpses in what appears to be some sort of ritual. They both quickly decide to leave. Later, Koyomi comes across Hanekawa in a bookstore, where they begin to converse. Hanekawa warns Koyomi that he and Hitagi must set down boundaries in their relationship if it is to last. She then leaves after getting a sudden headache. Koyomi then meets the girl again, who he finally realizes is Nadeko Sengoku, a friend of his sisters who he met as a child. He and Suruga intercept her at the shrine, and return to Koyomi's house. Once there, Nadeko takes off her clothes, revealing snakelike skin, and pleads for Koyomi to save her.