Omae Imouto ja Nakute Iinazuke datta no kayo!?

お前妹じゃなくて許嫁だったのかよ！？ · You weren't My Sister, but My Fiancée?! · 你原来不是我的妹妹而是我的未婚妻啊!?

Updated January 2026Latest chapters by ToruScans

Omae Imouto ja Nakute Iinazuke datta no kayo!? is a completed Comedy, Romance, School Life manga (2022). Read all 35 chapters online free on XOmanga.

"Humanity, adore thy little sister—." "I wonder when my sister Kana started becoming distant from me—." Shina Takashi lamented his current days, where being ignored was not uncommon. One day, his parents dropped a shocking revelation. Not only was Takashi not their biological son... but he was also the fiancé of Kana, whom he thought was his sister! From siblings to potential romantic interests, it’s not easy to sort out feelings. The fluctuating emotions, the bewildering distance. Their relationship undergoes an inevitable change—! She's a sister but not a sister!