Alternative Name: 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!?

Genre(s): Comedy Romance School Life

Demographic: Shounen

Summary:
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 ... MORE 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? HIDE