A naughty project to observe the reactions of female high school students during commuting hours in a women-only train car. The female students mistakenly (pretended to) boarded a man's car and were intrigued by him, trying to provoke him without being noticed by others, causing him to get an erection. The erect penis became the trigger for the female students' mischievous hearts to turn into excitement, as they reached out their hands towards the erect penis that the man directed at them…
