Omae Imouto Janakute Iinazuke Datta no ka yo!?

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adopted protagonist arranged marriage attempted seduction beautiful female lead big-breasted female lead brother and sister brother complex dead parents female lead falls in love first glasses-wearing male lead glasses-wearing protagonist high school students middle school students muscular male lead older male younger female personality changes perverts promises siblings not related by blood stepbrother-stepsister relationship stepsiblings stepsisters tsundere female lead younger sister
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Humanity, love our little sister. I miss the times when Kana, my younger sister, adored me. Takashi Shiina lamented the present days when he was often overlooked. One day, his parents revealed a shocking story. Surprisingly, he wasn't their real son but was instead his sister Kana's fiancé?

Associated Names

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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!?

Official Webtoon

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  1. toruscans

Latest Release

Rating(3.5 / 5.0, 72 votes)
5 stars
21(29%)
4 stars
15(21%)
3 stars
18(25%)
2 stars
18(25%)
1 stars
0(0%)
Popular Reviews All reviews
  1. Sordahon
    Sordahon rated it
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    3 whole months and a week.
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  1. MICHAEL_HENRY
    MICHAEL_HENRY rated it
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    GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN GARBAGE GARBAGE D.GAY MAN
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  1. WillTheThrill
    WillTheThrill rated it
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    How tf is reizu the weakest, she just described some of the possibilities of telefragging ppl
    0 0 Reply
  1. UnKnownEntity001
    UnKnownEntity001 rated it
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    Wait, I need to reread the entire thing. I’ve already forgotten the story lol
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  1. kealiirangel
    kealiirangel rated it
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    What’s everyone’s final rating for the series overall (1-10)?
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  1. qwaseeyu
    qwaseeyu rated it
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    No you idiot!! Have you not seen the Super Hero movie?!
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  1. ShuangWei
    ShuangWei rated it
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    Already completed on webtoon.
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  1. iLoveSex
    iLoveSex rated it
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    armpits are hot
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