While agents like Rina work behind the scenes, public safety is a collective effort. Security experts recommend:

Before exploring the concept of an undercover agent, it's essential to understand the problem. "Chikan" (痴漢) is a Japanese term that has become internationally recognized to describe the act of sexual assault or harassment in a public setting, most commonly on crowded trains and subways. The term covers a range of actions, including groping, sexual rubbing, and surreptitious mobile phone photography. It's a widespread issue, particularly in major metropolitan areas like Tokyo, where surveys have found that nearly two-thirds of young women report experiencing inappropriate touching during their commute.

In a world where espionage and counter-espionage games are a norm, one agent stands out for her daring missions and unmatched bravery - Rina, the undercover agent known only by her codename, "Chikan." With a reputation for getting in and out of the most secure locations undetected, Rina had earned the respect and admiration of her peers.