Tobacco Toka Suwana Souna Kouhai
タバコとか吸わなそうな後輩
A college club member named Kuromi Yamamoto is unassuming and quiet, while her upperclassman Shiori Shiratori appears to have an ideal life and appearance. The two share a cigarette, marking the beginning of their story. After seeing a different side of Kuromi, Shiori starts to experience a series of unsettling changes in her life.