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Alternative title: - Ima Sugu Oniichan ni Imouto da tte Iitai! (Japanese) - Imasugu Onii-chan ni Imouto Datte Iitai! (Japanese) - ~I Want to Say to my Older Brother That I'm His Younger Sister Now!~ (English) - いますぐお兄ちゃんに妹だっていいたい! (Japanese) - 现在就想告诉哥哥，我是妹妹! (Chinese)
Number of Episodes: 16
Aired: 2012-12-25 –
Genres: comedy, romance, ecchi
Rating: Parents Strongly Cautioned (Some Material May Be Inappropiate for Children Under 13)