Karen Araragi (阿良々木 火憐)
Voiced by: Eri Kitamura
Karen, the main character of Karen Bee, is one of Koyomi's sisters. She's older than Tsukihi and enjoys doing outdoor activities. Despite being younger, Karen is taller than Koyomi, much to Koyomi's dismay. In Karen Bee, her hot-headed personality and her habit of acting before thinking lead her to be stung by a bee, which leads to being poisoned with a terrible fever that lasts for 3 days. Like Hitagi, she refuses help from anyone which eventually leads to her and Koyomi fighting each other. Later, it was revealed that this event was set up by Kaiki. Karen and Tsukihi are nicknamed Tsuga no Ki Nichū no Fire Sisters (栂の木二中のファイヤーシスターズ). It was revealed that the reason she and Tsukihi found boyfriends was so that Koyomi would become jealous. They found boyfriends in Koyomi's image with Karen's boyfriend being shorter than her. She and Tsukihi also thought that Tsubasa was Koyomi's girlfriend. In Karen Bee, it is revealed that she has fallen for her brother though does not voice it.
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