Hitagi, the main character of Hitagi Crab, is a weak-looking girl with an "incurable disease". She is in the same class as Koyomi, but he has rarely heard her speak. 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 threatening everyone who discovers her secret. She called herself a tsundere and always speaks in an abusive style. At the end of Mayoi Snail, she admits that she loves Koyomi, and subsequently enters into a relationship with him. After the events in Tsukihi Phoenix, she overcame all of her trauma, and finally became a completely common cheerful girl. She starts referring to Araragi with a cute nickname, chuckling at small things and sending e-mails full of Emojis, although her sharp tongue is still there, but toned down. She seems to also have a father complex, getting excited when she uses her father's blanket, so much so that she can't fall asleep. Koyomi says that he loves Hitagi the most. She seems to not be on very good terms with Karen and Tsukihi. So far in the latest novels, she is either just mentioned or just plays a small part. In Nadeko Medusa, Nadeko says that if they were to meet in different circumstances, they would have been friends but Hitagi says that she hates cute brats like Nadeko. Her next story is revealed to be Hitagi End.
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