After returning to her announcing career following marriage, Hikari once again boards a crowded train, recalling her past encounter with a pervert. "I'm not the same person I was back then..." she tells herself, yet the pervert's lewd hands easily shatter her resolve. The thrill and pleasure, unattainable with her husband, gradually drive her mad, eroding her daily life. Secretly seeking the joy of the extraordinary, she continues to board the crowded train today...
