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Giri no Imouto to Kekkon Shimasu

義理の妹と結婚します

Takuro Matsubara's life changes when his father remarries, suddenly giving him a step-sister named Toko Konoe. At their first meeting, he bluntly declares that he might look at her in a sexual way, immediately ruining any chance of a good first impression. Their new life together begins with Takuro at an absolute negative-infinity favorability rating in Toko's eyes.

Despite his disastrous start, Takuro must navigate living under the same roof as his step-sister while dealing with her cold and hostile attitude. As they share daily life, unexpected moments and misunderstandings arise, blending comedy and romance in their unconventional relationship. Can Takuro ever improve his standing with Toko, or is he doomed to remain her least favorite person forever?

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