My Older Little Sister Is Just the Cutest

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Overview:

Title: My Older Little Sister Is Just the Cutest
Author: 香月美夜
Year: 2016
Type: Short Fiction
Series: 本好きの下剋上の短編 / Ascendance of a Bookworm short fiction

Variant Titles:

2021. My Older Little Sister Is Just the Cutest