You weren't my sister, but my fiancée!?

Explore the captivating world of You weren't my sister, but my fiancée!?, a captivating manga that masterfully blends Adaptation, Romance, School life, Slice of life. Created by the talented Experience this thrilling series for free at MangaSSS, where you’ll find a rich collection of manga to explore. With 19 chapters translated into English and more on the horizon, there's never been a better time to start your adventure. Be the first to know—create an account today, bookmark You weren't my sister, but my fiancée!? and never miss an update!

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 fiance! ?The definitive version of Reiwa's younger sister manga!