Omae Imouto Janakute Iinazuke Datta no ka yo!?
![Omae Imouto Janakute Iinazuke Datta no ka yo!?](http://fmcdn.mfcdn.net/store/manga/45613/cover.jpg?token=0dab9d58e803b169a38cd49bd1ab5ad13cc3fe44&ttl=1720530000&v=1710381421)
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?