Koichi felt empty as he was constantly commuting back and forth from work to home, and one day while commuting to work, he was sexually molested by a woman... He is excited by the exciting pleasure he has never experienced before, and he can't hold back and fucks her. However, the other person turns out to be Akari, a female employee of a business partner. Feeling vulnerable, Koichi ends up accepting the reverse sexual act on the train as he is told. smile