it won't solve the problem of chikan, but remon katayama hopes it will assure users, don't be ashamed, you're not alone, even if the police are no help. remon: the feeling of powerlessness has a lot to do with the fact that groping is seen as a normal part of life. many victims even worry that if they call for help, the train will be stopped and their fellow commuters will be late for work, so they say nothing out of consideration. reporter: chikan is also a common theme in manga. here, too, women and girls shown are at the mercy of male gropers. many images are far more violent than tsese. we meet blger kamaka owa. she was still in elementary school the first time a man reached inside her underwear. she's written a book about what she experienced and is now calling on other women to speak up as well. kamaka: i took the train to school, along with friends who were boys. their experiences of taking the train were completely different to mine. i realized men will only be able to understand the problem if we talk about it, loud and clear. she's also taken her message onto social media. k