タバコとか吸わなそうな後輩

A yuri manga that begins with a single cigarette shared between a plain kouhai and a privileged sempai— Kuromi Yamamoto is a quiet and unassuming member of a college club. Shiori Shiratori is an upperclassman in the club who seems to be blessed with good looks and a happy life. But after catching a glimpse of Kuromi’s “true nature,” Shiori’s life begins to spiral out of control… (Source: booth, translated)