Staying at my girlfriend's place for the first time, I meet her sister, Komomo. While she guards her chest strictly in public, at home she goes braless and is prone to accidental slips. I soon realize she's the very gravure idol I've been secretly supporting! Every time I see her nipples slip out, I get incredibly excited. With her thin clothing, is she doing it on purpose? Unable to suppress my urges after this parade of slips, I...