BUSAN: Even now, more than 30 years later, Choi Seung-woo weeps when he describes the five years of slave labour and frequent rape that he endured as a child. Choi was one of thousands sent to Brothers Home, an institution for so-called vagrants, as a way to clear city streets in preparation for the country's first Olympics. An AP investigation shows abuse at Brothers was much more vicious and widespread than previously realised, and that a cover-up was orchestrated at the highest levels of government.