This is an O express train that runs in K prefecture, a little far from central Tokyo. During the rush hour every morning, the damage rate of filthy ● was increasing with a congestion rate of over 150%. Azumi who decided to use that line for commuting. The act of riding a "women-only car" so as not to damage Azumi's commuting time will dye Azumi's commuting time in a lily color. One day, Azumi, who should have been in a women-only car as usual, is sick. I tell my boss Yui about it because of my fear.