My Sister, My Stuck Butt, and Me

姉と壁尻と私

Ane to Kabejiri to Watashi

Six years older than her, Yui is a prodigy who has already won a Nobel Prize. Meanwhile, her little sister Mari is just an ordinary elementary school student. Feeling the weight of the vast difference between them, Mari ends up physically trapped inside a wall while heading to school...?! From the creative force behind "MamaYuyu" comes a chaotic story of sibling bonds!

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