The Frown sister. Always expression does not change.  (Source: getchu)

Based on the erotic game by Moonstone Cherry.<br>
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It’s summer vacation and your parents are heading overseas for work, leaving you with your 5 little sisters: typical lovestruck imouto Aya, modern tsundere Rio, timid and shy Hiyori, lively and perverted Koharu, and the bookworm Michika who's a lovable Sadist. With no distractions and ecchi happenings one after the other, how far will you go with them?<br>
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(Source: Hau~ Omochikaeri!)

Michika Nanase