takako, not her real name, was only a teenager when she was sexually assaulted on the train for the first touching and grabbing me. i that's when i finally realised that this was chikan. i was sexually assaulted almost every day. bbc eye has been investigating a network of websites selling thousands of videos of women being sexually abused on public transport across east asia. this is a horrific business of sexual assault. the websites are run by a shadowy figure known as uncle oi. but who is he? our investigation has led us to tokyo, where we tracked down uncle qi and his close associates. translation: hi. hi, noctis? posing as a potential investor, our undercoverjournalist met with them multiple times, until uncle qi himself agreed to meet us. in this meeting, tang zhuoran, a 27—year—old from china, admits to being uncle oi. the man behind all the websites we have been investigating. translation: how many people do you have in your current team? - translation: i have a team of 15 people. | he also admits to making huge profits. cashing in on sexual violence against women. translation: o