Anime Crave : Watch Anime Free EpisodesBoku No Imouto Wa Osaka Okan Anime Episodes Online (In Japanese subtitles)
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Synopsis: Due to his family's circumstances, high school student Kyōsuke has been separated from his sister Namika for around 10 years. When they are finally reunited, Kyōsuke realizes a lot has changed about her. Completely turned Osaka-n, Namika tries to teach him about the ways of the place she lived and the way they talk.