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 almost never 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, 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. In the original, she overcame all of her trauma, and finally became a completely common cheerful girl. She starts calling Araragi with a cute nickname, chuckling at small things and sending e-mails full of Emojis. She cuts her hair shorter than Suruga.