Yuma faces harassment from gropers on the train she takes to school. Her classmate, Suwa, starts commuting with Yuma to protect her, and the two start dating. However, she develops a strange interest in her biology teacher, Kajima, who rides the same train as her every morning... (Source: MANGA MILLION) Note: Includes the one-shot "Dare ka ga Watashi ni Kiss wo Shita (誰かが私にキスをした)".

Yuma faces harassment from gropers on the train she takes to school. Her classmate, Suwa, starts commuting with Yuma to protect her, and the two start dating. However, she develops a strange interest in her biology teacher, Kajima, who rides the same train as her every morning... (Source: MANGA MILLION) Note: Includes the one-shot "Dare ka ga Watashi ni Kiss wo Shita (誰かが私にキスをした)".