Wotagei

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Wotagei (ヲタ芸), also known as otagei (オタ芸), is a type of dancing and cheering gestures performed by wota, fans of Japanese idol singers (and thus seen as Akiba-kei), involving jumping, clapping, arm-waving and chanting slogans. Wotagei is performed at concerts, or at events such as anime and manga conventions and meetings of idol fan groups, and it is thought to have developed from the ōendan, organised cheering squads common at sporting events in Japan. Wotagei is particularly associated with fans of Hello! Project, AKB48, and Vocaloid idols including Hatsune Miku, as well as fans of anime and game voice actresses (seiyuu), who often perform theme songs for the series in which they appear.