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You weren't my sister, but my fiancée!?
También conocida como: Em Gái Tôi Là Hôn Thê Của Tôi!?, Kamu Bukan Adikku, Tapi Tunanganku?!, Omae Imouto ja Nakute Iinazuke datta no kayo!?, updating, You weren't My Sister, but My Fiancée?!, Ты была не моей сестрой, а моей невестой!?, お前妹じゃなくて許嫁だったのかよ!?, 你原来不是我的妹妹而是我的未婚妻啊!? · Omae Imouto Janakute Iinazuke Datta no ka yo!? · You Weren't My Sister, but My Fiancée!? · Ты была не моей сестрой, а моей невестой!? · お前妹じゃなくて許嫁だったのかよ!? · 你原來不是我的妹妹而是我的未婚妻啊!? · You Weren't My Sister, but My Fiancé!? · Omae Imouto ja Nakute Iinazuke datta no kayo!? · Omae Imouto ja Nakute Iinazuke datta no ka yo!?
Humanity, love our little sister. I miss the time when her younger sister Kana was fond of me. Takashi Shiina lamented the current days when he was often ignored. One day, his parents cut out a shocking story. Surprisingly, he wasn't his real son but he was his sister Kana's fiancée?