This is the O Express that runs through K Prefecture, slightly away from central Tokyo. During morning rush hours, the congestion rate exceeds 150%, and incidents of groping increase. Azumi started using this line for her commute. To avoid becoming a victim of groping, she boarded the 'women-only car'. This action began to color Azumi's commuting time with yuri hues... One day, despite intending to ride in the women-only car, Azumi was groped. Due to her intense fear, she told her superior Yui about the incident...
