Hitagi, a main female character of Bakemonogatari, 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 nearly weightless. Ever since then, she has avoided contact with everyone else, threatening everyone who discovers her secret. She jokingly labels herself as a tsundere and speaks with a sharp tongue.

A girl that really likes riding bicycles, and is quite energetic, though a little crude. If you stick around her, she's surprisingly cautious. She is very helpful and a little too familiar with things, but doesn't dig too deep. She's also not quite comfortable with having other people help her. Her personality drastically changes when it comes to her own interests. She is proactive and has a habit of using strange and difficult vocabulary at times, but somehow you can tell she's purposely doing so. She ended up hanging out with the Future Gadget Laboratory since she started working at the CRT TV Workshop.