This is the O express that runs in K Prefecture, which is a little far from central Tokyo. Every morning during the rush hour, the number of victims of molestation increased with the congestion rate exceeding 150%. Azumi decided to use the route for commuting. The act of riding a "women-only vehicle" in order not to be a victim of molestation dyes Azumi's commuting time into a lily color. One day, Azumi, who should have gotten on the women-only vehicle as usual, ends up being molested. Out of fear, she talks about it to her boss, Yui.
