After getting married, Hikari returned to the announcement business after a long absence.And when she gets on a crowded train for the first time in a long time, she remembers the past that she once encountered a filthy ●. She tells him, ``She's no longer who she used to be...'', but the lewd slut attacking her again easily defeats her.The thrill that her husband can't feel and her pleasure gradually drives her crazy and erodes her daily life.And secretly seeking her extraordinary pleasure, she boarded a crowded train again today.