Japan is pretty famous for its packed trains that invite occasional chikan (groping incidents). Luckily, in light of improving rights for women in Japan, the law of late tends to come down pretty hard on train gropers. Assuming a victim or a witness to such a crime speaks up about it, a perpetrator typically faces immediate arrest at the next train station and can probably expect to do some jail time.
While this system works pretty well for the most part, it’s not unheard of for some unlucky guys to face career and life-destroying consequences after being falsely accused of groping. One Japanese Twitter user, in fact, posted a series of Tweets detailing a close call he had himself, relating that he was almost certainly destined for the slammer if he hadn’t been saved by the alleged victim herself.