Gin's manga / #public sex(4)

A oneshot regarding the "relationship" between a teacher and his lonely, introverted student. Published as part of "Henai" book together with 1.Hen Ai 2.Tomari Ki 3.Messiah no Yakubi 4.Ore no Doukyuusei ga Binkan Sugite Yabai!: 5.Ore no Doukyuusei ga Kagen wo Shiranakute Tsurai: 6.Kyoushitsu no Yugami Prequel - "Yugami Hajime"

Every day, a young man will take the train and be assaulted by his chief. But there's a conductor who watches him...