• Book Name: You weren’t my sister, but my fiancée!? Manga
• Alternative(s): お前妹じゃなくて許嫁だったのかよ!?
• Genre(s): Adaptation Romance School Life Slice Of Life
• Status: Ongoing Download Manga
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Summary: Humanity, love your 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! ? The definitive version of Reiwa’s younger sister manga!